Which alphabet letter is a question?

You have three orange, two pink and five purple balls in the drawer beside your bed. There is no electricity and the room is entirely dark. How many balls must you take out to ensure at least one ball of each colour at least?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

Find out the missing number in the picture attached:

What has no start, end, or centre?

Find three whole, positive numbers that have the same answer when multiplied together as when added together.

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

On my way to St. Ives I saw a man with 7 wives. Each wife had 7 sacks. Each sack had 7 cats. Each cat had 7 kittens. Kittens, cats, sacks, wives. How many were going to St. Ives?

A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?

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