le petit chasseur \n automaton with a bow shoots arrow on a cardboard and hits selected number \n unknown
1784
la magie blanche dévoilée
Unknown

Le Petit Chasseur

1784

La Magie Blanche Dévoilée

42



how, on delivering a ring to a number of persons, to find which person has got it, which hand it is on, which finger, and which joint. \n people seated in a row and numbered, calculation is made and result gives answers \n unknown
1784
breslaw's last legacy
Unknown

How, on delivering a Ring to a Number of Persons, to find which Person has got it, which Hand it is on, which Finger, and which Joint.

1784

Breslaw's Last Legacy

40



démonstration de mémoire avec un livre de 100 pages de chiffres \n memory demonstration with a 100page book of numbers \n henri decremps
1786
testament de jérôme sharp
Henri Decremps

Démonstration de mémoire avec un livre de 100 pages de chiffres

1786

Testament de Jérôme Sharp

319



the demon digits \n three cards with numbers arrange themselves in requested order \n adolphe "magicus" blind \n the demon digits \n adolphe "magicus" blind
1911
later magic
Adolphe "Magicus" Blind

The Demon Digits

Also published here

1911

Later Magic

581



the demon digits \n three cards with numbers arrange themselves in requested order \n adolphe "magicus" blind \n the demon digits \n adolphe "magicus" blind
1911
magical titbits
Adolphe "Magicus" Blind

The Demon Digits

Also published here

1911

Magical Titbits

29



a tissue paper mystery \n number cards, one chosen, liar is seen on tissue paper, when turned over and ar removed, it reads 17 which is the chosen number \n edward bagshawe
1924
exclusive problems in magic
Edward Bagshawe

A Tissue Paper Mystery

1924

Exclusive Problems in Magic

47



the elusive digits \n four cards with numbers from one to four in a glass frame, arrange in wanted order, second set of cards in card stand \n oswald rae
1926
between ourselves
Oswald Rae

The Elusive Digits

1926

Between Ourselves

34



double date \n dates of two borrowed coins divined, dates written into grid on a paper by spectator \n tom sellers \n anything squared \n karl fulves
1931
magical pleasantries
Tom Sellers

Double Date

Variations

1931

Magical Pleasantries

8



der zahlenturm \n discs with numbers from 1 to 10 on a pile, spectator cuts and number can be divined \n hans zimmermann
1941
hokus pokus
Hans Zimmermann

Der Zahlenturm

Sep. 1941

Hokus Pokus
(Vol. 3 No. 9)

2



the elevens stunt \n mathematical stunt, place three cards on table, numbers can always be divided by eleven \n unknown
1949
tricks and stunts with playing cards
Unknown

The Elevens Stunt

1949

Tricks and Stunts With Playing Cards

20



telling a chosen card \n divine value of playing card via mathematical method (multiply by three, add six, divide by three) \n unknown
1949
tricks and stunts with playing cards
Unknown

Telling a Chosen Card

1949

Tricks and Stunts With Playing Cards

25



cardology or, a card trick without cards \n no. 118, magician divines thoughtof card after spectator follows mathematical procedure and announces the result \n harry blackstone
1950
scarne on card tricks
Harry Blackstone

Cardology or, A Card Trick Without Cards

1950

Scarne on Card Tricks

229



object in mind \n divination of one of three objects, mathematical principle \n jack yates
1954
minds in closeup
Jack Yates

Object in Mind

1954

Minds in CloseUp

25



think of a number \n business cards with number written on them, chosen number is spelled and card with same number is found \n ronald b. edwards
1954
the new phoenix 301348
Ronald B. Edwards

Think of a Number

1954

The New Phoenix 301348
(Issue 309)

34



the cyclic number \n a packet containing six cards forming the number 142857, when multiplied by any number from 2 to 6, gives a result which the cards themselves reveal \n lloyd e. jones
1956
mathematics, magic and mystery
Lloyd E. Jones

The Cyclic Number

1956

Mathematics, Magic And Mystery

9



heath's bill trick \n serial number divination, very mathematical \n royal vale heath
1956
mathematics, magic and mystery
Royal Vale Heath

Heath's Bill Trick

1956

Mathematics, Magic And Mystery

52



the three heaps \n start with three heaps of matches, magician can (without looking) form a single pile of matches equal a number called out by spectator \n unknown \n welcome change \n jim steinmeyer \n zeitgeist \n jim steinmeyer \n the three piles divination \n unknown
1956
mathematics, magic and mystery
Unknown

The Three Heaps

VariationsAlso published here

1956

Mathematics, Magic And Mystery

55



heath's "tappit" \n tapping the hours type of trick, but with colored tiles and numbers printed on them \n royal vale heath \n tapping the hours \n unknown \n eddie joseph
1956
mathematics, magic and mystery
Royal Vale Heath

Heath's "Tappit"

Inspired by

1956

Mathematics, Magic And Mystery

102



blyth's domino box \n dominoes in a box shifted, the spots on the dominoes will predict how many have been shifted \n will blyth \n blocks of india \n unknown
1956
mathematics, magic and mystery
Will Blyth

Blyth's Domino Box

Variations

1956

Mathematics, Magic And Mystery

110



the mysteries of seven \n explains why the number nine has such weird properties \n martin gardner
1956
mathematics, magic and mystery
Martin Gardner

The Mysteries of Seven

1956

Mathematics, Magic And Mystery

168



favorite number \n calculation in which favorite number appears nine times at the end \n max katz
1957
26 originals
Max Katz

Favorite Number

1957

26 Originals

23



paradox papers \n paper with numbers in a 4x4 grid is folded into small square, edges cut off, then all even numbers are one way and the odds another, application with cards, steve shimm suggestion, tapestry handling, see also p. 521 for gene nielson handling, h. e. dudeney \n martin gardner \n henry dudeny puzzle from "modern puzzles" (1926) \n news test \n edmund rowland \n paradox papers \n martin gardner \n wraparound \n karl fulves \n foldover notes \n karl fulves \n paper folding note \n karl fulves \n paradox redux \n philip t. goldstein \n folding numbers \n jack avis \n the core \n pit hartling \n disparity \n ramón riobóo
1971
the pallbearers review vol. 58
Martin Gardner

Paradox Papers

Inspired by Henry Dudeny puzzle from "Modern Puzzles" (1926)
Related toVariationsAlso published here

July 1971

The Pallbearers Review Vol. 58
(Vol. 6 No. 9)

429



time on my hands \n twelve chips with numbers on one side and letters on other side, five color coded control cards (cccc), clock layout, a chosen number is eventually revealed \n paul swinford
1971
lecture notes
Paul Swinford

Time on my Hands

1971

Lecture Notes

3



the three piles divination \n start with three heaps of matches, magician can (without looking) form a single pile of matches equal a number called out by spectator \n unknown \n the three heaps \n unknown
1971
at the drop of a match
Unknown

The Three Piles Divination

Also published here

1971

At the Drop of a Match

24



the missing digit \n spectator form two numbers from all ten digits, adds them and removes one digit from answer which the performer divines, from a dover collection edited by martin gardner \n sam lloyd
1972
the pallbearers review vol. 58
Sam Lloyd

The Missing Digit

Dec. 1972

The Pallbearers Review Vol. 58
(Vol. 8 No. 2)

578



numbers game \n several numbers are written next to letters of the alphabet, one letter is selected with abc cards and performer divines number \n jerry mentzer
1972
the compleat magick — volume i
Jerry Mentzer

Numbers Game

1972

The Compleat Magick — Volume I
(Issue 65)

323



in the mirror \n spectator writes number on mirror, performer on another mirror, numbers transpose in mirror writing, variation with words, see also p. 786 for comment by reinhard müller \n robert e. neale \n karl fulves
1974
the pallbearers review vol. 910
Robert E. Neale, Karl Fulves

In the Mirror

Feb. 1974

The Pallbearers Review Vol. 910
(Vol. 9 No. 4)

712



mathemagic \n intro \n karl fulves
1974
the pallbearers review vol. 910
Karl Fulves

Mathemagic

June 1974

The Pallbearers Review Vol. 910
(Vol. 9 No. 8)

750



add and subtract \n number thing with desk calculator \n l. vosburgh lyons
1974
the pallbearers review vol. 910
L. Vosburgh Lyons

Add and Subtract

June 1974

The Pallbearers Review Vol. 910
(Vol. 9 No. 8)

750



lightning strikes thrice \n three numbers and totals arrived at with blank cards, they are all identical, see p. 1053 for note by johnnie murray \n stewart judah \n lightning strikes thrice \n stewart judah \n blue lightning \n karl fulves \n cubic code \n karl fulves
1974
the pallbearers review vol. 910
Stewart Judah

Lightning Strikes Thrice

Related toVariationsAlso published here

Autumn 1974

The Pallbearers Review Vol. 910
(Vol. 9 No. 10th Folio (Part One))

798



smart as hell \n numbers written on slip, some chosen, person with higher total wins, amazingly the totals are equal \n arthur hill
1975
the pallbearers review vol. 910
Arthur Hill

Smart As Hell

June 1975

The Pallbearers Review Vol. 910
(Vol. 10 No. 8)

969



math trix \n intro \n karl fulves
1975
the pallbearers review vol. 910
Karl Fulves

Math Trix

Oct. 1975

The Pallbearers Review Vol. 910
(Vol. 10 No. 12)

1057



a timely legend \n number demonstration with drawn clock layout \n ken de courcy
1975
son of pentertain
Ken De Courcy

A Timely Legend

1975

Son of Pentertain

3



flashmental \n cards with simple math problems, selected one is divined \n jack bridwell
1976
the compleat magick — volume ii
Jack Bridwell

FlashMental

1976

The Compleat Magick — Volume II
(Issue 148)

738



upside down calculation \n addition that can be read upside down \n unknown
1976
mistress of pentertain
Unknown

Upside Down Calculation

1976

Mistress of Pentertain

16



practice makes perfect \n calculation which ends with thirteen duplicate digits of a chosen one \n gerry findler
1976
mistress of pentertain
Gerry Findler

Practice Makes Perfect

1976

Mistress of Pentertain

17



reversible addition \n column of twodigit numbers added, same amount when each number has reversed digits \n unknown
1976
mistress of pentertain
Unknown

Reversible Addition

1976

Mistress of Pentertain

38



number magic \n \n harry lorayne
1977
the magic book
Harry Lorayne

Number Magic

1977

The Magic Book

208



the missing digit \n spectator circles a digit and calls out the others, circled digit divined \n harry lorayne
1977
the magic book
Harry Lorayne

The Missing Digit

1977

The Magic Book

211



your lucky number \n after some calculation, all digits of the result are the lucky digit \n harry lorayne
1977
the magic book
Harry Lorayne

Your Lucky Number

1977

The Magic Book

217



numerology \n performer and spectator choose a digit from serial of a bill, after some calculation the spectator has a twodigit number with both those digits \n karl fulves
1977
the magic book
Karl Fulves

Numerology

1977

The Magic Book

36



change in mind \n "as many pennies as you have, plus three more, plus enough left over...", trick that fooled einstein with coins \n karl fulves \n correct change \n jon racherbaumer
1977
the magic book
Karl Fulves

Change in Mind

Variations

1977

The Magic Book

83



the new math miracle \n six cards with numbers on both sides in envelopes, shuffled and turned over by spectator, total is divined \n larry becker \n hummer's poker chip baffle \n bob hummer
1978
world of super mentalism
Larry Becker

The New Math Miracle

Inspired by

1978

World of Super Mentalism

29



shh! \n 25 number card with numbers from one to five, spectator divines if numbers match or not \n dr. dan j. alessini
1979
the compleat magick — volume iii
Dr. Dan J. Alessini

SHH!

1979

The Compleat Magick — Volume III
(Issue 233)

1161



hypnomath \n no. 8, spectator cannot add two numbers correctly, upsidedown numbers \n sam schwartz
1979
selfworking mental magic
Sam Schwartz

HypnoMath

1979

SelfWorking Mental Magic

10



liar's matrix \n 01combinations, 1 bit changed in any line gives a unique line \n alex elmsley
1980
curioser
Alex Elmsley

Liar's Matrix

1980

Curioser

29



numeru \n 52 number cards, one is removed without looking and performer removes two cards, cards are placed faceup where spectator cuts, deck is shown in numerical order and cards placed at correct spot, when both numbers are added the result equals the selection \n howard a. adams
1980
oicufesp
Howard A. Adams

Numeru

1980

OICUFESP
(Issue 4  esp card & mental miracles RETURN)

7



astro perception calendar \n spectator's birth month used to count to a esp symbol on a grid, it's predicted \n steve dusheck \n astro perception calendar \n steve dusheck
1980 ca.
lecture no. 1
Steve Dusheck

Astro Perception Calendar

Also published here

1980 ca.

Lecture No. 1

18



computer dating \n no. 2, two persons write a digit, calculation done with one digit leads to twodigit number composed of both original numbers \n unknown
1983
selfworking number magic
Unknown

Computer Dating

1983

SelfWorking Number Magic

2



resistible rithmetic \n no. 3, spectator writes number with writing surface held away and gets it wrong (18 instead of 81), mirror writing \n unknown
1983
selfworking number magic
Unknown

Resistible Rithmetic

1983

SelfWorking Number Magic

3



step right up \n no. 4, sixteen slips, half with "i owe you $1", half with "you owe me $1", spectator writes down 1, 2, 4, 8 in any order with plus or minus between and counts to a slip and loses \n unknown
1983
selfworking number magic
Unknown

Step Right Up

1983

SelfWorking Number Magic

5



lightning strikes thrice \n no. 10, three numbers and totals arrived at with blank cards, they are all identical \n stewart judah \n lightning strikes thrice \n stewart judah
1983
selfworking number magic
Stewart Judah

Lightning Strikes Thrice

Also published here

1983

SelfWorking Number Magic

12



mah jongg cubes \n colored squares with numbers on other side, number selected and spelled with mixed squares \n unknown
1985
the fred braue notebooks
Unknown

Mah Jongg Cubes

1985

The Fred Braue Notebooks
(Issue 1)

20



paradox papers \n no. 9, paper with numbers in a 4x4 grid is folded into small square, edges cut off, then all even numbers are one way and the odds another, application with card values on paper or card layout (chosen card turned over is only oddcolored at the end) \n martin gardner \n paradox papers \n martin gardner
1985
selfworking paper magic
Martin Gardner

Paradox Papers

Also published here

1985

SelfWorking Paper Magic

18



mind scan \n no. 57, two cardboards, one has triangle and circle cut out, other has some numbers, spectator puts first one on top of second one, adds numbers that are visible and announces total, performer knows numbers and which is in circle \n karl fulves \n hummer effects \n karl fulves
1985
selfworking paper magic
Karl Fulves

Mind Scan

Related to

1985

SelfWorking Paper Magic

100



dreimal die gleiche \n numbers on papers, pairs made, the add up to same total \n stewart judah
1985
intermagic
Stewart Judah

Dreimal die Gleiche

July 1985

Intermagic
(Vol. 11 No. 3&4)

170



the binary system \n historical information and punch card sorting applications
 sorting 32 punch cards in numerical order
 divining selected number
 solving logic problem \n martin gardner \n scientific american, dec. 1960 \n gardner adenda \n paul swinford
1986
the cyberdeck
Martin Gardner

The Binary System

VariationsAlso published here Scientific American, Dec. 1960

1986

The Cyberdeck

1



der zaubernde mathematiker \n intro \n rudolf braunmüller
1987
intermagic
Rudolf Braunmüller

Der zaubernde Mathematiker

Oct. 1987

Intermagic
(Vol. 13 No. 1)

8



grab gamble \n coins in bowl, spectator reaches in and takes a handful of coins and pockets them in threephase procedure, number of remaining coins divined \n terri rogers \n das greifzuspiel \n terri rogers
1988
more secrets
Terri Rogers

Grab Gamble

Also published here

1988

More Secrets

61



das greifzuspiel \n coins in bowl, spectator reaches in and takes a handful of coins and pockets them in threephase procedure, number of remaining coins divined \n terri rogers \n grab gamble \n terri rogers
1989
intermagic
Terri Rogers

Das GreifzuSpiel

Also published here

July 1989

Intermagic
(Vol. 14 No. 4&5)

173



unlisted numbers \n four discs with four numbers on each, spectator choses one disc, all put in pocket, performer finds right one without looking \n karl fulves
1993
easytodo magic tricks for children
Karl Fulves

Unlisted Numbers

1993

EasytoDo Magic Tricks for Children

28



astro perception calendar \n spectator's birth month used to count to a esp symbol on a grid, it's predicted \n steve dusheck \n astro perception calendar \n steve dusheck
1993
dusheck's mental magic
Steve Dusheck

Astro Perception Calendar

Also published here

1993

Dusheck's Mental Magic

31



matrix notes \n \n karl fulves
1994
crooked tales
Karl Fulves

Matrix Notes

1994

Crooked Tales

74



s.p.a.t. \n letters associated with numbers, credit information \n mel bennett \n lee sallows idea in word ways, feb. 1990
1994
verbatim
Mel Bennett

S.P.A.T.

Inspired by Lee Sallows idea in Word Ways, Feb. 1990

1994

Verbatim
(Issue 10)

133



jumble \n number up to twelve chosen, letters that spell the number taken from letter deck, second number as well, performer looks at all letters shuffled together and announced both numbers, with two more uses of sallows square
 crosswords
 si minus (card counting analog) \n karl fulves
1994
verbatim
Karl Fulves

Jumble

1994

Verbatim
(Issue 10)

137



downunder age cards \n reporting a misplaced idea in which number cards are downunder dealt \n karl fulves
1995
the fine print
Karl Fulves

DownUnder Age Cards

1995

The Fine Print
(Issue 1)

4



comment on contest influence \n five cards, one one and four zeros, put in any order and the resulting number is paid out \n karl fulves \n "contest influence" (robert ecklund, ed mellon's "mental wise") \n contest influence solutions \n max abrams
1995
the fine print
Karl Fulves

Comment on Contest Influence

Inspired by "Contest Influence" (Robert Ecklund, Ed Mellon's "Mental Wise")
Variations

1995

The Fine Print
(Issue 2)

31



jumbled numbers \n no. 33, seven numbers on slips of paper are threaded onto safety pin in random order, performer takes it behind his back and tears off the numbers in order of spectator's phone number \n karl fulves
1995
easy magic
Karl Fulves

Jumbled Numbers

1995

Easy Magic

46



tailpiece \n revealing a number typed into the calculator of a windows computer \n alex elmsley
1996
mouse magic
Alex Elmsley

Tailpiece

1996

Mouse Magic

51



millennium minus 5 \n properties of the number 1995 \n mel bennett
1996
the fine print
Mel Bennett

Millennium Minus 5

1996

The Fine Print
(Issue 4)

67



age cards automaton \n \n maurice kraitchik \n mathematical recreations
1996
the fine print
Maurice Kraitchik

Age Cards Automaton

Also published here

1996

The Fine Print
(Issue 4)

68



contest influence solutions \n five cards, one one and four zeros, put in any order and the resulting number is paid out, two methods, velleda \n max abrams \n comment on contest influence \n karl fulves \n before your eyes \n norman ashworth
1996
the fine print
Max Abrams

Contest Influence Solutions

Inspired byRelated to

1996

The Fine Print
(Issue 4)

90



a new year curiosity \n "dot com  tricks and stunts with numbers"
apparently random calculation with a 3x3 matrix, 1997 arrived at \n martin gardner \n dr. irving joshua matrix \n rec newsletter (michael ecker) \n a very good year \n sam schwartz
1997
the fine print
Martin Gardner, Dr. Irving Joshua Matrix

A New Year Curiosity

VariationsAlso published here REC Newsletter (Michael Ecker)

1997

The Fine Print
(Issue 5)

127



a very good year \n "dot com  tricks and stunts with numbers"
apparently random calculation with a 3x3 matrix, 1998 arrived at \n sam schwartz \n a new year curiosity \n martin gardner \n dr. irving joshua matrix
1997
the fine print
Sam Schwartz

A Very Good Year

Inspired by

1997

The Fine Print
(Issue 6)

163



pick a no. \n "short takes"
way to get a small number when required \n karl fulves
1998
the fine print
Karl Fulves

Pick A No.

1998

The Fine Print
(Issue 8)

231



your better half \n "dot com  tricks and stunts with numbers"
age revealed after some number calculation \n karl fulves
1998
the fine print
Karl Fulves

Your Better Half

1998

The Fine Print
(Issue 8)

250



totalizer \n "an impromptu trick with four dice"
four dice put on table with onetwofivesix sides up, spectator follows some instructions or not while back is turned and covers dice, performer arranges dice so that two left dice have same total as right dice \n karl fulves
2001
latter day secrets
Karl Fulves

Totalizer

2001

Latter Day Secrets
(Issue 5)

128



cryptomania \n board to transcribe letters into numbers, names become numbers etc \n david berglas
2002
the mind & magic of david berglas
David Berglas

Cryptomania

2002

The Mind & Magic of David Berglas

455



binary basics \n explaining binary numbers \n karl fulves
2005
combo ii
Karl Fulves

Binary Basics

2005

Combo II

5



alpha numeric \n further notes on combo system and number systems
 the octal system
 the hexadecimal system
 binary to hex \n karl fulves
2005
combo ii
Karl Fulves

Alpha Numeric

2005

Combo II

112



odd bits \n selfsimilar sequence oddity \n karl fulves
2005
combo ii
Karl Fulves

Odd Bits

2005

Combo II

118



easy as a<sup><sup>b</sup>⁄<sub>c</sub><sup> \n calculator option for simplifying task to spectators in division tricks \n mel bennett \n zangbar zackleback problem (genii, june 1952, oct. 1958, ibidem #1214) \n remains to be seen \n sam schwartz \n karl fulves \n "math prediction" (david g. luenberger, linking ring, march 1974, p. 77)
2006
prolix
Mel Bennett

Easy As A^{b⁄c}

Inspired by Zangbar Zackleback Problem (Genii, June 1952, Oct. 1958, Ibidem #1214)
Related to

2006

Prolix
(Issue 2)

109



digit daze \n memorizing digits \n karl fulves
2007
word play
Karl Fulves

Digit Daze

2007

Word Play

49



breaking bread \n small pieces of bread placed in groups that form a square, even though some are eaten, the amount of bread stays the same, mathematical principle (edge counting) \n robert e. neale \n to feed many \n michael weber
2008
this is not a book
Robert E. Neale

Breaking Bread

Inspired by

2008

This Is Not a Book

16



i bless bile \n cards with numbers on them used to spell various words when turned upside down, then flipped over to reveal a skull picture \n robert e. neale \n hot spell \n dan harlan
2008
this is not a book
Robert E. Neale

I Bless Bile

Inspired by

2008

This Is Not a Book

87



nothing test \n numbers chosen and put in calculator, divided by numbers chosen from deck of cards, remainder given out in money, it is zero three times \n mel bennett
2010
prolix
Mel Bennett

Nothing Test

2010

Prolix
(Issue 7)

435



perpetual \n "in order"
four cardboard pieces with numbers on both sides are in envelopes, with his back turned the performer orders them in numerical order \n karl fulves \n perpetual notions \n karl fulves
2011
prolix
Karl Fulves

Perpetual

Variations

2011

Prolix
(Issue 9)

571



perpetual notions \n "notes on 'perpetual'"
four cardboard pieces with numbers on both sides are in envelopes, with his back turned the performer orders them in numerical order
 tight circle
 in color
 picking numbers
 perceptual
 using windows
 perpetual numbers \n karl fulves \n perpetual \n karl fulves
2011
xtra credit
Karl Fulves

Perpetual Notions

Inspired by

2011

Xtra Credit
(Issue 9)

57



amnesia (失忆症) \n you make spectator forget a number you wrote down: you write four numbers, spectator only remembers three \n g
2014
inspiration
G

Amnesia (失忆症)

2014

Inspiration

51



cell shock \n spectator writes his cell phone number on ten pieces of paper and mixes the digits up, performer dials number and first gets a funny acquaintance, then the spectator's phone itself rings \n karl fulves
2015
the lowdown
Karl Fulves

Cell Shock

2015

The Lowdown
(Issue 1)

4



note 1 \n notes on target practice \n karl fulves \n a. target practice \n karl fulves \n in the beginning \n karl fulves
2015
errata
Karl Fulves

Note 1

Related to

2015

Errata
(Issue 1)

11



note 7 \n open questions for diana games principle \n karl fulves \n the diana games \n karl fulves
2015
errata
Karl Fulves

Note 7

Related to

2015

Errata
(Issue 1)

11



the 711 game \n three boxes with two dice each, box shaken and one die from each box eventually chosen, top numbers added and sum compared to list of target numbers
 shake 'em up
 711 strategy
 the twonumber game \n karl fulves \n super shot \n karl fulves \n c. the game is rigged \n karl fulves \n the diana games \n karl fulves
2015
errata
Karl Fulves

The 711 Game

Inspired byRelated to

2015

Errata
(Issue 1)

18



mathematical curiosities \n (2^2)^2 = 2^(2^2), presentational idea \n roberto giobbi
2016
hidden agenda
Roberto Giobbi

Mathematical Curiosities

2016

Hidden Agenda
(Issue Jan 8)

11



fibonacci numbers \n about hidden structures and curiosities \n roberto giobbi
2016
hidden agenda
Roberto Giobbi

Fibonacci Numbers

2016

Hidden Agenda
(Issue Feb 5)

40



name a number \n other ways to arrive at a number instead of just asking for one \n roberto giobbi
2016
hidden agenda
Roberto Giobbi

Name a Number

2016

Hidden Agenda
(Issue Feb 19)

54



how to lie with statistics \n \n roberto giobbi
2016
hidden agenda
Roberto Giobbi

How to Lie With Statistics

2016

Hidden Agenda
(Issue Mar 28)

92



52! = 8.07 x 10<sup>67</sup> \n as presentational hook \n roberto giobbi
2016
hidden agenda
Roberto Giobbi

52! = 8.07 x 10^{67}

2016

Hidden Agenda
(Issue July 20)

208



formula x \n on mathematics & magic \n roberto giobbi
2016
hidden agenda
Roberto Giobbi

Formula X

2016

Hidden Agenda
(Issue Nov 26)

339



暧昧 \n (ambiguous) magician correctly divines spectator's birthdate and astrological sign, propless \n 殷欣 (sion) \n 很暧昧 \n 殷欣 (sion)
2017
暧昧
殷欣 (Sion)

暧昧

Related to

2017

暧昧

12



the trinary number system \n "don't be afraid of the math  it is your friend." \n bob farmer
2017
the bammo tarodiction toolbox
Bob Farmer

The Trinary Number System

2017

The Bammo Tarodiction Toolbox
()

40



1 to 53 in standard ternary \n table \n bob farmer
2017
the bammo tarodiction toolbox
Bob Farmer

1 to 53 in Standard Ternary

2017

The Bammo Tarodiction Toolbox
()

56



numballoon prediction \n use numbered balloons to predict serial number on dollar bill \n jon allen \n shimon nahamani
2017
the interrobang lecture
Jon Allen, Shimon Nahamani

Numballoon Prediction

2017

The Interrobang Lecture

12



welcome change \n three piles of coin, some mixing, then number of coins in a pile is known by performer without looking \n jim steinmeyer \n the three heaps \n unknown
2020
virtual impuzzibilities
Jim Steinmeyer

Welcome Change

Inspired by

2020

Virtual Impuzzibilities

10


