There is a box full of marbles,
all but two are blue,
all but two are green,
and all but two are red.

How many marbles are in the box?

Complete the series by replacing "?" with the correct number.

ST ND RD TH '?'

One absent-minded ancient philosopher forgot to wind up his only clock in the house. He had no radio, TV, telephone, internet, or any other means for telling time. So he travelled on foot to his friend's place a few miles down the straight desert road. He stayed at his friend's house for the night and when he came back home, he knew how to set his clock. How did he know?

What is red and smells like blue paint?

what's the probability of getting a king or a queen from a pack of 52 cards?

What question can you never answer yes to?

A man is found dead with a knife in his back When the investigation is done. A chair lays beside him and the forensic team finds moisture around the body.

If he committed suicide, how did he do it?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

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?