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Results tagged with logical-deduction
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user 18821
A puzzle that requires formal logical deduction to arrive at the solution. This suggests more than merely reasoning through clues to find an answer (you might want [situation] for that).
1
vote
1
answer
1k
views
How many doors are there? [duplicate]
You wake up in the center of a large, homogeneous, nearly-circular room. Along the edge of the room, are many doors, each looks identical to the last. When you stand at one door and look across the ro …
- 1,877
2
votes
A Strange Planet with a Strange Dance
The number of moves it takes in order for the shortest alien to be at the front of the line is O(n). Therefore, they keep dancing until enough aliens die off that the dance converges in a reasonable t …
- 1,877
11
votes
Accepted
Students in a class with the same name
Each of the numbers
0,1,2…,9,10 appears at least once.
In fact, the only way this works is if there are 1 students with name A, 2 students with name B, 3 students with name C, etc up to 11 stud …
- 1,877
6
votes
Reverse puzzling - What is my brother solving?
When drawn on a hexagonal grid, it looks symmetric
(2,8)
red
(2,1) (2,3) (7,8) (9,8)
green
(2,4) (2,6) (4,8) (6,8) (7,1) (7,3) (9,1) (9,3)
blue
(1,8) (2,7) (2,9) (3,8) (4,1) (4,3) (6,1) (6,3) (7, …
- 1,877