You want to boil a two-minute egg. If you only have a three-minute timer (hourglass), a four-minute timer and a five-minute timer, how can you boil the egg for only two minutes?

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

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

How many times in a given day, minutes and hour clock comes in a straight line ?

How many times can you subtract the number 5 from 25?

You have a thousand Re. 1 coins with you. You have ten bags with you and you can put any number of coins in each of the bags. The condition is that if someone asks you for any amount between 1 and 1000, you must be able to give that amount by just giving the bag (you are not allowed to open the bag and give coins).

How will you do it?

An office is divided into 8 cubicles. How many of the cubicles are painted if only 1/8 of the cubicles are painted?

Count the number of triangles in the below picture?

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

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