Known by all without exception, Forever here, for your protection, Sometimes strong, sometimes weak, Right after the night I come - hot and chic. And while millions of miles away, I always get to you, I find my way. No life around could do without me, Can you guess what I might be?

A large water tank has two inlet pipes (a large one and a small one) and one outlet pipe. It takes 3 hours to fill the tank with the large inlet pipe. On the other hand, it takes 6 hours to fill the tank with the small inlet pipe. The outlet pipe allows the full tank to be emptied in 9 hours.

What fraction of the tank (initially empty) will be filled in 0.64 hours if all three pipes are in operation? Give your answer to two decimal places (e.g., 0.25, 0.5, or 0.75).

I am looking for a word that change both gender and number when i add the letter 'S'.

What Word am I Looking For ?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

Why Wine Glass Stem is so long?

Find the combined weight of the Cat, Dog and Rabbit in the given picture.

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

A Child was born in Lahore, Pakistan. Still, the child is not a Pakistani citizen. why?

What is Luis Suarez's (Soccer Player) favorite tea?