John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

There was a blind man. He had four socks in his drawer either black or white. He opened it and took out two socks. Now the probability that it was a pair of white socks is 1/2.

Can you find out the probability that he had taken out a pair of black socks ?

It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

Can you replace the X (both small and big x) with the numbers between 1 to 19 such that all the rows of 3 numbers between X (big x) sum to 23?

What is the coolest letter in the alphabet?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

I can write cow in 13 letters.

Can You?

Today is John's birthday.
A year ago, John had five candles and he lit all the candles except the one at the last.
Now he is going to light all the candles.

How old is John Today?

(He is not five today.....)

Name a key which is hardest to turn.