Find the next number in the sequence

5 12 24 36 ?

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

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

Can you replace the question mark with the correct number in the below table sequence?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

Two-person want to cross a river. Only one boat is present on the riverside that can carry only one person at a time.

However, they still manage to cross the river. How is it possible?

A brand new Mobile Phone was on sale at 20% as a promotional offer. By what per cent must the Mobile price be increased to sell it at the original price again?

Make a sentence consisting of three words that have the whole alphabet.

Consider this about a word: The first two letters signify a male, the first three letters signify a female, the first four letters signify a great, while the entire world signifies a great woman. What is the word?

You see me once in June, twice in November, and not at all in May. What am I?