Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

What does this rebus mean?

O
N
C
E
TIME

You are in a room with no metal objects except for two iron rods. Only one of them is a magnet.
How can you identify which one is a magnet?

A rubber ball keeps on bouncing back to 2/3 of the height from which it is dropped. Can you calculate the fraction of its original height that the ball will bounce after it is dropped and it has bounced four times without any hindrance ?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

Mr Black, Mr Gray, and Mr White are fighting in a truel. They each get a gun and take turns shooting at each other until only one person is left. Mr Black, who hits his shot 1/3 of the time, gets to shoot first. Mr Gray, who hits his shot 2/3 of the time, gets to shoot next, assuming he is still alive. Mr White, who hits his shot all the time, shoots next, assuming he is also alive. The cycle repeats. If you are Mr Black, where should you shoot first for the highest chance of survival?

A man is found dead with a knife in his back When the investigation is done. A chair lays beside him and the forensic team finds moisture around the body.

If he committed suicide, how did he do it?