What is the fastest way to double your money?

What four weights can be used to balance from 1 to 30 pounds?

Which number should replace the question mark?

Chocolate costs 6 rupees and a Toy costs 5 rupees. If you have 32 rupees in total, how many chocolates and how many Toys can be purchased with that amount?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

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

f you were running a race, and you passed the person in 2nd place, what place would you be in now?

What breaks yet never falls, and what falls yet never breaks?

In the picture given below, can you find out which digit will take place of the question mark?

Two friends were stuck in a cottage. They had nothing to do and thus they started playing cards. Suddenly the power went off and Friend 1 inverted the position of 15 cards in the normal deck of 52 cards and shuffled it. Now he asked Friend 2 to divide the cards into two piles (need not be equal) with equal number of cards facing up. The room was quite dark and Friend 2 could not see the cards. He thinks for a while and then divides the cards in two piles.

On checking, the count of cards facing up is same in both the piles. How could Friend 2 have done it ?