You have four chains. Each chain has three links in it. Although it is difficult to cut the links, you wish to make a single loop with all 12 links. What is the fewest number of cuts you must make to accomplish this task?

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

A man has a barrel filled with oil that weighs 100 pounds, and then he puts something into it. Now the barrel weighs less than 100 pounds. What did he put in the barrel?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

Find the next number in the sequence

5 12 24 36 ?

Which letter of the alphabet has the most water?

Can you discover the missing number in this series?

37, 10, 82
29, 11, 47
96, 15, 87
42, ?, 15

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?

Replace the question mark in the picture below.

What does does this rebus picture means ?