If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

Name a key which is hardest to turn.

Can you name three consecutive days without using the words Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, or Sunday?

Solve the rebus riddle in the picture below.

How can you drop a raw egg from a height onto a concrete floor without cracking it?

Rahul decided to meet Simran so he boards a local train from Bombay station. Just after the station, there is a 1km long tunnel. The train starts and is now accelerating. Rahul is a claustrophobic guy, so what is the best position for him to sit?

Below, you can see three complete equations and one incomplete. Based on the three complete ones, can you complete the incomplete one?

5 $ 4 $ 3 $ 9 = 4215
6 $ 9 $ 2 $ 6 = 3816
4 $ 7 $ 3 $ 3 = 1122
7 $ 2 $ 7 $ 4 = ____