Replace the question mark with the number below given a simple math problem.

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

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

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

what does the below rebus means?

A bomb exploded in a room full of married couples and no one died. How?

An infinite number of mathematicians are standing behind a bar. The first asks the barman for half a pint of beer, the second for a quarter pint, the third an eighth, and so on. How many pints of beer will the barman need to fulfill all mathematicians' wishes?

A thief enters a store and threatens the clerk, forcing her to open the safe. The clerk says, “The code for the safe is different every day, and if you hurt me you’ll never get the code.” But the thief manages to guess the code on his own. How did he do it?

Can you identify if it's a murder or a suicide ?

Can you arrange the six given marbles in a manner that each one of them is touching all four marbles of different colours?