A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

There are forty elephants and they have forty-fore heads. How can this be possible?

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?

What is the centre of gravity?

What has many teeth, but cannot bite?

In the image below, you can see two glasses and two matchsticks.You need to move four matchsticks in such a manner that the crosses come inside the glasses. Note: you cannot move the crossed.

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

Mr Red Lives in the red house.
Mr Green Lives in the greenhouse.
Mr Yellow Lives in the yellow house.

Who lives in the Whitehouse?

Find the last number in the series below:

voN luJ yaM raM ---

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?