All Puzzles
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Given a chess board of N * N, we have to put only rooks on chess board we wants to place some rooks on the chessboard in such a way that the following conditions are satisfied:
- Each square of the board contains at most one rook.
- There are no four rooks forming a rectangle.
- Formally, there should not be any four valid integers r1,c1, r2, c2 (r1≠r2,c1≠c2) such that there are rooks on squares (r1,c1), (r1,c2), (r2,c1) and (r2,c2)
- The number of rooks is at least 8N
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A killer bee was buzzing, a queen bee was buzzing, a worker bee was buzzing, and a honey bee was buzzing.
How many bees were in buzzing ?
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While enjoying a giddy ride at the carousel Sammy propounded a puzzle which reflects much credit to his mental abilities.
“One third of the number of kids riding ahead of me, added to three-quarter of those riding behind me gives the correct number of children on this Merry-Go-Round” is the way he puts it; but it will puzzle you quite a little to tell just how many riders there were at this whirling circus.View SolutionSubmit Solution- 1,045.4K views
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The cold faucet in a bath lets the water in at the rate of 15 litres per minute.
The hot faucet fills the bath at the rate of 10 liters per minute.
The plug hole lets the water out of the bath at the rate of 12 liters per minute.The bath holds a maximum of 520 liters.
I turn both faucets on, but forget to put the plug in. How many minutes does it take for the bath to overflow?
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What when read from right to left is a servant but when read from left to right is a ruler?
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