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

Count the Triangle in the figure given below:

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

I am sure no one can have two things for dinner. what are they?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?

The more it dries, the wetter it becomes. Can you tell what it is?

A father's child, a mother's child, yet no one's son.

Who am I?

John bought 150 chocolates but he misplaced some of them. His Father asked him how many chocolates were misplaced.
He gave the following answer to him:
If you count in pairs, one remains
If you count in threes, two remain
If you count in fours, three remain
If you count in fives, four remain
If you count in sixes, five remain
If you count in sevens, no chocolate remains.

Can you analyze the statements and tell us how many chocolates were lost?

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?