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Logical

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26 likes 9.2
(Impossible.)
Three Idols in Logical
Classic: Three gods A, B, and C are called, in some order, True, False, and Random. T...
Added 10 months ago by M2JOHNSON currently with 34 comments
9 likes 7.8
(Challenging)
Marble Weights in Logical
You are given a set of scales and 12 marbles. The scales are of the old balance variety...
Added 10 months ago by jaX currently with 11 comments
22 likes 7.5
(Challenging)
Cards With Crosses in Logical
You have a stack of 23 cards. Each card has an image of a cross on one side, and an ima...
Added 10 months ago by jaX currently with 3 comments
18 likes 7.4
(Challenging)
The Number Problem in Logical
What does 3685=? 8809=6 7111=0 2172=0 6666=4 1111=0 3213=0 7662=2 8096=5 931...
Added 10 months ago by Tsion currently with 11 comments
14 likes 7.1
(Challenging)
12 Identical Balls in Logical
You have 12 identical balls. One of them is slightly different in weight than the rest...
Added about 1 year ago by kash currently with 15 comments
8 likes 6.9
(Challenging)
Cracking the Safe in Logical
You are to open a safe without knowing the combination. Beginning with the dial set at ...
Added about 1 year ago by johnp currently with 8 comments
10 likes 6.9
(Challenging)
Happy Handshaking in Logical
Jack and his wife went to a party where four other married couples were present. Every ...
Added 9 months ago by vette982 currently with 9 comments
9 likes 6.8
(Challenging)
Fork in the road in Logical
You are walking down a road and arrive at a fork that splits the road into two separate...
Added about 1 year ago by city_slick currently with 7 comments
10 likes 6.5
(Challenging)
The Neighbourhood in Logical
People say Einstein suggested that 98% of the world's population couldn't figure out th...
Added 7 months ago by ace currently with 13 comments
13 likes 6.4
(Challenging)
The Monty Hall Problem in Logical
This problem has numerous variations and its various forms has stumped many mathematici...
Added about 1 year ago by johnp currently with 16 comments
9 likes 5.6
(Moderate)
Coin Flip in Logical
On Monday, you flip a coin all day. You start flipping it until you see the pattern He...
Added 6 months ago by kash currently with 13 comments
7 likes 5.6
(Moderate)
3 Painted Ladies in Logical
There are 3 smart old ladies standing in a desert such a way that each lady can see the...
Added 7 months ago by nykodemus currently with 6 comments
4 likes 5.5
(Moderate)
Cars and Hotels in Logical
You're driving a silver car, you pull up to a hotel and realize you're bankrupt. What's...
Added 10 months ago by ameliewoods currently with 5 comments
8 likes 5.5
(Moderate)
Tea and Wine in Logical
You take a spoon of wine from a barrel of wine and put it into your cup of tea. Then yo...
Added 7 months ago by city_slick currently with 2 comments
16 likes 5.3
(Moderate)
The Bookworm in Logical
Looking onto a shelf you see three books each labeled Volume 1, Volume 2, and Volume 3 ...
Added 10 months ago by Tsion currently with 6 comments