What will you call your mother's brother's brother-in-law?

Solve the below puzzle by replacing the question mark with the correct number.

3 6 12

4 8 16

5 10 ?

There is a basket full of hats. Three are white and two are black. Three men, Tom, Tim, and Jim, each take a hat out of the basket and put it on their heads without seeing the hat they selected or the hats the other men selected. The men arrange themselves so Tom can see Tim and Jim’s hats, Tim can see Jim’s hat, and Jim can’t see anyone’s hat. Tom is asked what color his hat is and he says he doesn’t know. Tim is asked the same question, and he also doesn’t know. Finally, Jim is asked the question, and he does know. What colour is his hat?

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?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

What two things can you never eat for breakfast?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

Find the value of "?" in the ball picture Riddle below:

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

What am I?