Can you write down eight eights so that they add up to one thousand?

When I asked a girl's name she told me her name is the date '07/09/2001'.

I thought for a few seconds and then I got her name. Do you?

In the picture that is attached with this question, you can find a square which comprises of four little squares inside it. Consider this square to be made with matchsticks. You have to remove two matchsticks such that only two squares remain instead of five.How will you do it ?

Prove that twice of ten is the same as twice of eleven.

Six people park their car in an underground parking of a store. The store has six floors in all. Each one of them goes to a different floor. Simon stays in the lift for the longest. Sia gets out before Peter but after Tracy. The first one to get out is Harold. Debra leaves after Tracy who gets out on the third floor.

Can you find out who leaves the lift on which floor?

Can you find the thief by just looking at the picture below?

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?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?