What is the next number in the series?

15 29 56 108 208 ?

Why is the Hole below a Lock?

This is a famous paradox which has caused a great deal of argument and disbelief from many who cannot accept the correct answer. Four balls are placed in a hat. One is white, one is blue and the other two are red. The bag is shaken and someone draws two balls from the hat. He looks at the two balls and announces that at least one of them is red. What are the chances that the other ball he has drawn out is also red?

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

John bought 150 chocolates but he misplaced some of them. His Father asked him how many chocolates were misplaced.
He gave the following answer to him:
If you count in pairs, one remains
If you count in threes, two remain
If you count in fours, three remain
If you count in fives, four remain
If you count in sixes, five remain
If you count in sevens, no chocolate remains.

Can you analyze the statements and tell us how many chocolates were lost?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

I always drive my customer away.

Who am I?

What does below Rebus say?

XLR8

If your uncle’s sister is not your aunt, what relation is she to you?

How many letters are in the alphabet?