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 have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

Find the next number in the series below

21 32 54 87 131 ?

Replace the 'X' with any mathematical symbol to make the expression equal to 111.

18 X 12 X 2 X 3 = 111

I am lying and I always lie. Tell me whether I am lying or telling the truth.

A Child was born in Lahore, Pakistan.

Still child is not a Pakistani citizen.why ?

Can you place three balls such that the equation shown in the picture holds true?

A man is trapped in a room. The room has only two possible exits doors. Through the first door there is a room constructed from magnifying glass. The blazing hot sun instantly fries anything or anyone that enters. Through the second door there is a fire-breathing dragon. How does the man escape?