What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

How can you make a TV, a bed, a dog, and a car liquid?

What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.

Two-person want to cross a river. Only one boat is present on the riverside that can carry only one person at a time.

However, they still manage to cross the river. How is it possible?

What does a man do only once in his lifetime, but women do once a year after they are 29?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

If eleven plus two equals one, what does nine plus five equal?

Before reading ahead, you must know the fact that only one of the people here is telling the truth.

A says that B is lying.
B says that C is lying.
C says both A and B are lying.

Can you find out who is speaking the truth?

What is the last thing you take off before bed?