The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member. Find how much younger is the new member ?

If eleven plus two equals one, what does nine plus five equal?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

What is the fastest way to double your money?

The centre of the third figure is empty. What digit should fit inside?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

There is something which you can be arrested for attempting but not for successfully completing.

What can you see in the middle of March and April that you can never see in any other month?

Given that

(78)^9 = 6
And (69)^4 = 11

Can you find out

(99)^2 =?

(Note: This is Logical, not Mathematical)