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?

What number comes next in the series?

5 15 5 18 5 24 14 20 _

What is both possible and impossible at the same time?

When monkey rotate the gear, which mark will be hit 1 or 2 ?

Sherlock Holmes was challenged to make a pre-drawn line smaller without erasing it. He did it in fractions of seconds. How?

Three fair coins are tossed in the air and they land with heads up. Can you calculate the chances that when they are tossed again, two coins will again land with heads up?

Can you identify the hidden rebus in the image below?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

Which alphabet is a part of our body?

Can you find out the missing number in the grid?