A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

John has played 50 ODI's and his average is 50. How many runs should he score in his 51st ODI, so that his average score jumps to 51?

You have a 12 liters jug full of water. You have two empty 8 liters and 5 liters jug. How can you divide the water into two equal parts using these jugs?

You are given with the following sum. Each of the letters can be decoded as a digit. If we tell you that D = 5, then can you solve it entirely?

DONALD
+GERALD
=ROBERT

Which is faster, Heat or Cold ? Explain.

A doctor and a boy were fishing. The boy was the doctor’s son, but the doctor was not the boy’s father. Who was the doctor?

In particular commonwealth games, a female participant won silver and gold medals for a single event.

How can this be possible?

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

Identify Me

Hint1: I am a god
Hint 2: I am a planet
Hint 3: measurer of heat

Solve the following series:
AZ, GT, MN, __, YB