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

What is black when you buy it, red when you use it, and gray when you throw it away?

John has played 50 ODI's and his average is 50. How many runs should he score in his 51st ODI, so that his average score jumps to 51?

If you say my name, I will no longer exist. What am I?

I organized a small get together at my home.
In the party , i have a barrel with some whiskey in it.

Suddenly Guest 1 say 'I bet this barrel of whiskey is more than half full'.
'No, it's less than half full' Guest 2 replied.

I don't have any measuring instrument and without removing whiskey from it , how can i determine which of the guest is right ?

Can you count the number of lines in the below picture?

A man has to get a fox, a chicken, and a sack of corn across a river.

He has a rowboat, and it can only carry him and one other thing.
If the fox and the chicken are left together, the fox will eat the chicken.
If the chicken and the corn are left together, the chicken will eat the corn.

How does the man do it?

What is the below Rebus indicate?

Which word is least like the others? Third, fourth, fifth, sixth, seventh, eighth, ninth?

There was an aeroplane crash, every single person died, but two people survived. How is this possible?