When can you add two to eleven and get one as the correct answer?

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?

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

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.

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?

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

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

What 5-letter word becomes shorter when you add two letters to it?

What tree do we all carry in our hands?

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

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