I have keys without key locks.I have space without rooms.You can enter but you cannot go outside.

A bat and a ball cost €1.10. The bat costs one euro more than the ball. How much does the ball cost?

Give me food, and I will live; give me water, and I will die. What am I?

There is an ancient invention still used today in some parts of the world which allows people to see through walls. What is it?

You have a drawer with 10 pairs of black socks and 10 pairs of white socks. How many times do you need to take out a sock so that you get a matching pair?

While going to the fair, John met 5 clowns on his way. Each clown had 4 dogs, each dog had 2 cats and each cat had 2 mice. How many in total were going to the fair?

Arnold Schwarzenegger has a long one. Michael J. Fox has a short one. Madonna does not use hers. Obama always uses his.

Your parents have six sons including you and each son has one sister. How many people are in the family?

A cow is tied to a 4 meter long rope. There is food, 20 meters away from the cow. However, the cow manages to go to the food and eat it. How come?

What is correct to say – “the yolk of the egg is white” or “the yolk of the egg are white”?

A boy is walking down the road with 3 people in his family. One of them is a doctor. While the boy is the doctor’s son, the doctor is not the boy’s father. Then who is the doctor?

What number comes next in the following sequence? 2 4 8 10 20 __