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Top Questions

10 votes
2 answers
2k views

IQ test question with boxes above and below a line

12 votes
5 answers
2k views

Unpaired socks in my lap

18 votes
2 answers
697 views

Nonconsecutive Anti-Knight Fillomino?

8 votes
3 answers
1k views

Largest sequence of adjacent numbers less than 11 such that adjacent number divides the other

13 votes
2 answers
441 views

Going around in circles

9 votes
4 answers
1k views

Prisoners and warden game, again?

19 votes
1 answer
1k views

LTCGY - Let the corners guide you

17 votes
1 answer
1k views

66: Luftballons

3 votes
6 answers
1k views

3 doors guarded by 1 knight and 2 knaves

11 votes
4 answers
1k views

How fast can you win this (very stupid) game?

13 votes
1 answer
441 views

Parts of Humans

15 votes
1 answer
129 views

tnih neddih eht kcehc

10 votes
1 answer
379 views

Adam Smith and David Hume

5 votes
1 answer
360 views

Filling a rectangular grid with holes using tetrominoes

3 votes
1 answer
213 views

COMMENCE = 18251624, PRESERVE = 18323620, UNLAWFUL = what?

1 vote
3 answers
213 views

A 3 digit perfect square and its reverse are both perfect squares. What is the number?

2 votes
1 answer
189 views

Find the longest English anagram-homophone chain

2 votes
1 answer
95 views

Number sequence puzzle: 14, 32, 69, 05,?

5 votes
1 answer
178 views

Rats & Snakes: Avoid being eaten, escape unharmed

3 votes
1 answer
125 views

Generalized knights and knaves puzzle

0 votes
0 answers
252 views

Puzzle to unlock Easter Egg, hint: Douglas Adams fans will know this one [closed]

3 votes
1 answer
192 views

Culture Fair IQ Test

0 votes
1 answer
94 views

What is the pattern in the sequence? -1, 3/2, -13/6, 25/8

-2 votes
3 answers
101 views

2,3,6,7 to get 10 [closed]

4 votes
0 answers
130 views

The Merchant's coin weighing [duplicate]

0 votes
0 answers
116 views

The riddle is, "What is but never was? You can live with one but not the other." [closed]

2 votes
0 answers
105 views

Sequence of shapes with lines and dot

1 vote
0 answers
87 views

Progressive matrix puzzle with circles and dots

0 votes
0 answers
79 views

A robin-round tournament, where 20 % of all games were draws and half of teams did not win. How many teams were there? [closed]

0 votes
1 answer
26 views

Prove that all 101 balls have the same weight


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