What is the fastest way to double your money?

The day before yesterday I was 25 and the next year I will be 28. This is true only one day in a year. What day is my birthday?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

What always comes into a house through the keyhole?

You need to remove two matchsticks to make the below equation true. Can you do it ?

Can you replace the question mark with the correct number in the below table sequence?

How many runs at maximum can a batsman score in a normal one-day match? Consider the fact that the conditions are ideal and there are no No Balls, no Wide Balls and no Extras in that match.

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?

A Shopkeeper sold a few chickens to four different customers on a particular day. It was such that each customer purchased half of the remaining chickens and half the chicken more.

Can you find out how many chicken were sold by the shopkeeper on that day if we tell you that the fourth customer bought a single chicken ?

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?