What can you see in the middle of March and April that you can never see in any other month?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

Can you find out the next digit in the following series ?

0, 0, 1, 3, 2, 6, 3, 9, 4, 12, 5, ?

Jim and Sarah are in a long-distance relationship. Jim buys an engagement ring for Sarah and wants to mail it to her. Unfortunately, the only way to ensure the ring will be received is to place a lock on the package. Jim has locks and Sarah has locks, but neither has keys for each other’s locks. How can they make sure the ring isn’t stolen?

What is the centre of gravity?

Our product and our sum always give the same answer. Who are we?

How many runs at maximum can a batsman score in a normal one-day match? Consider the fact that the conditions are ideal and there are no No Balls, no Wide Balls and no Extras in that match.

Prove that twice of ten is the same as twice of eleven.

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?