A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

You can find some missing letters in the picture. By placing two particular letters in the spaces, you can form a nine lettered word beginning from one of the corners and going clockwise direction to the middle. Can you find out the letters and the word?

Assume there are approximately 5,000,000,000 (5 billion) people on Earth. What would you estimate to be the result, if you multiply together the number of fingers on every person's left hand? (For the purposes of this exercise, thumbs count as fingers, for five fingers per hand.) If you cannot estimate the number then try to guess how long the number would be.

Out of four images which one is the odd one out?

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

Here is what you have to do. You have to throw a ball as hard as you can but it must return back to you even if it does not bounce at anything. Also, you have nothing attached to the ball. There is no one on the other end to catch that ball and throw it back at you.

How will you do it?

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

How can one talk without saying a single word?