What number when divided in half becomes zero?

What has one letter and starts with an E?

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

Who is that with a neck and no head, two arms and no hands? What is it?

You are presented with three boxes. One of them has a red ball inside and the other two have a black ball inside each of them. You are asked to pick up the one with red ball and you pick one. Now, one of the other boxes is opened and it is found to have a black ball.

You are presented with a chance to change your box with the one that is left closed. Will you change your box? Why or why not?

What is at the end of a rainbow?

An exterior architect is asked by a builder to plant seven trees in a manner that there are exactly six rows of trees in a straight line and each row has three trees in particular.

How will he do it?

Can you find out which options fits best with the missing column?

What does man love more than life, hate more than death or mortal strife; That which contented men desire; the poor have, the rich require; the miser spends, the spendthrift saves, and all men carry to their graves?

What is the next number in this matchsticks series riddle?