What has 13 hearts but no other organs?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

A Scientist was fifty years old in the year 2000 but he was forty years old in the year 2010. How can this be possible?

PS: It has a logical answer.

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

What animal walks on four legs in the morning, two legs during the day, and three legs in the evening?

Oedipus, the king of Thebes, figured out the answer to the riddle:

You have 1023 apples and 10 bags. You have to distribute these apples in these 10 bags in any way you choose. But when I ask for a certain number of apples you have to give them in terms of bags without transferring the apples from other bags. How do you distribute the apples?

Solve the mathematical equation in the picture below.

I am quite hot but become too cold if you remove the first two letters. What am I?

A man walked into a pub and went straight towards the Barman. He asked for a dirty martini from the Barman. The Barman thought something and then pulled out a pistol from his drawer and aimed it directly at the man. Why did he do that?