What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

An ape is trying to climb on a pole that is 60 feet high. Due to the slippery surface, the ape climbs 3 feet in a minute only to slip back 2 feet.

How much time do you think the monkey will take to reach the top of the pole?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

A Car driver was heading down a street in Washington. He went right past a stop sign without stopping, he turned left where there was a 'no left turn' sign and he went the wrong way on a one-way street. Then he went on the right side of the road past a cop car. Still, he didn't break any traffic laws. Why not?

It can't be seen, can't be felt, can't be heard, and can't be smelt.
It lies behind stars and under hills, And empty holes it fills.
It comes first and follows after, Ends life, and kills laughter.
What is it?

Why 1729 is a magic number? Answer Logically.

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

Consider all the numbers between 1 and 1 million. Among all these numbers, there is something very special about the number 8 and the number 2202. What is it?