Jack have ten pairs of black socks, eight pairs of white socks and seven pairs of green socks. Everything is mixed in a draw. As there is no light he were not able to identify the colour of the socks. How many of the socks did he want to take to match one pair

Rearrange the letters in "new door" to make one word.

What do you get if you add 2 to 100 four times?

There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?

Every words stands for unique digit that makes the arithmetic equation true

SEVEN + SEVEN + SIX = TWENTY.

What are the digits ?

If 1+9+8=1, what is 2+8+9?

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

How can you make number one disappear by adding something to it?

Find the value of "?" in the ball picture Riddle below:

Why is the Hole below a Lock?