What has to be broken before you can use it?

I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?

How do you go from 98 to 720 using just one letter?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

I have two coins.
* One of the coins is a faulty coin having a tail on both sides of it.
* The other coin is a perfect coin (heads on side and tail on other).

I blindfold myself and pick a coin and put the coin on the table. The face of the coin towards the sky is the tail.

What is the probability that another side is also tail?

If,

6 / 7 = 2
3 / 9 = 7
8 / 2 = 6

Then

4 / 5 = ?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

Can you name four days which start with the letter 'T'?

What is the coolest letter in the alphabet?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.