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?

Can you replace the question mark with the correct number?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

What will you call your mother's brother's brother-in-law?

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?

People make me, save me, change me, raise me. What am I?

There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?

While going to your grandmother's house, you counted Twenty houses on the right side. While returning back to your home, you counted Twenty houses on the left side.

How many houses are there between your home and your grandmother's home?

How can one talk without saying a single word?

The two towns are exactly 100 km apart. John leaves City A driving at 30 km/hr and Jacob leaves City B half an hour later driving at 60 km/hr. Who will be closer to City A when they meet?