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mathematics

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205 Questions

Views Newest Activity Votes

votes

answers

views

Impossible 100 Balls Game

strategy optimization

Apr 12 '17 at 3:56 Community♦ 1

votes

answers

722

views

A book with only two letters

probability word-search

Aug 6 '16 at 23:33 Megha 622

votes

answer

976

views

Frying Three Steaks

mathematics strategy optimization

May 6 '16 at 18:22 f'' 31.7k

votes

answers

408

views

101 special numbers

mathematics strategy

May 3 '16 at 14:38 Gamow 43k

votes

answers

195

views

Find 2018 with the least amount of numbers

formation-of-numbers

Sep 12 at 9:22 msh210 2,060

votes

answer

views

A Prime Length Rope into Prime length ropes

mathematics logical-deduction combinatorics optimization

Jun 21 at 11:51 hexomino 70.5k

votes

answers

views

Hard 4x8 chocolate bar Riddle v2

logical-deduction

Sep 29 '18 at 3:17 Hat 3

votes

answer

336

views

A Stick and Two Similar Triangles

logical-deduction geometry

Aug 3 '18 at 14:25 hexomino 70.5k

votes

answers

267

views

Weirdly Numbered Cars

mathematics logical-deduction

Jul 29 '18 at 13:02 JMP 29.6k

votes

answers

views

Hacking an electronic keypad v2

logical-deduction strategy optimization

Mar 25 '18 at 10:07 Oray 26k

votes

answers

722

views

How much money can we make? v2

mathematics strategy optimization

Mar 21 '18 at 18:32 Kevin 1,954

votes

answers

325

views

$12$ Students $5$ questions

logical-deduction

Jan 2 '18 at 2:09 Trevor Powell 5,503

votes

answers

267

views

A Counterfeit $100 Bill among 93 Bills

logical-deduction optimization

Dec 16 '17 at 19:01 Mike Earnest 29.4k

votes

answer

939

views

How to get away with a murder

logical-deduction situation

Dec 12 '17 at 19:52 Rand al'Thor 90k

votes

answer

367

views

Number Theory Class v2

mathematics

Sep 22 '17 at 15:25 Ankoganit 15k

votes

answer

321

views

Removing matchsticks to remove all squares

logical-deduction optimization

Aug 22 '17 at 19:41 GentlePurpleRain♦ 22.8k

votes

answers

178

views

Malware in the computer [closed]

mathematics logical-deduction

Dec 24 '16 at 15:24 Element118 1,580

votes

answers

542

views

A weird Shepherd with his sheep

logical-deduction combinatorics

Sep 7 '16 at 5:36 Jonathan Allan 19.9k

votes

answer

173

views

What is the ratio between small and big x-gons?

mathematics geometry algebra

Mar 26 '16 at 22:10 f'' 31.7k

votes

answer

223

views

Colored Cubes (Red, Blue and Green)

logical-deduction combinatorics

Feb 26 '16 at 23:07 f'' 31.7k

votes

answers

138

views

Make 2019 Factorial Multiplication a perfect square

mathematics logical-deduction

Jul 4 at 15:17 Omega Krypton 20.4k

votes

answers

views

Find 108 by using 3,4,6

mathematics logical-deduction

Apr 29 at 9:01 Christian Gonzalez 5

votes

answer

155

views

Coloring the Chess Board v2

logical-deduction

Dec 5 '18 at 10:12 jafe 49.7k

votes

answers

217

views

Lots of children with Halloween candies

mathematics logical-deduction

Nov 1 '18 at 18:47 gabbo1092 5,340

votes

answers

182

views

Fix the perfectly ordered equation

mathematics logical-deduction

Sep 7 '18 at 17:11 lovemathboy 496

votes

answer

447

views

Five Hats and Three Logicians

logical-deduction

Sep 6 '18 at 17:06 Mike Earnest 29.4k

votes

answers

139

views

3 points on a circle [duplicate]

geometry probability

Jul 6 '18 at 14:46 IronEagle 499

votes

answer

197

views

3x3 Dancing Floor Game!

logical-deduction

Apr 6 '18 at 20:08 JMP 29.6k

votes

answers

324

views

Find the ? in this grid

logical-deduction formation-of-numbers grid-deduction

Nov 13 '17 at 11:01 ffao 20.7k

votes

answers

413

views

5 weights on modified balance scale

mathematics weighing

Sep 12 '17 at 6:04 humn 19.1k

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205 Questions

Impossible 100 Balls Game

A book with only two letters

Frying Three Steaks

101 special numbers

Find 2018 with the least amount of numbers

A Prime Length Rope into Prime length ropes

Hard 4x8 chocolate bar Riddle v2

A Stick and Two Similar Triangles

Weirdly Numbered Cars

Hacking an electronic keypad v2

How much money can we make? v2

$12$ Students $5$ questions

A Counterfeit $100 Bill among 93 Bills

How to get away with a murder

Number Theory Class v2

Removing matchsticks to remove all squares

Malware in the computer [closed]

A weird Shepherd with his sheep

What is the ratio between small and big x-gons?

Colored Cubes (Red, Blue and Green)

Make 2019 Factorial Multiplication a perfect square

Find 108 by using 3,4,6

Coloring the Chess Board v2

Lots of children with Halloween candies

Fix the perfectly ordered equation

Five Hats and Three Logicians

3 points on a circle [duplicate]

3x3 Dancing Floor Game!

Find the ? in this grid

5 weights on modified balance scale