I have teeth but i don't bite. Who Am I ?

If "P" means "-", "Q" means "/", "R" means "+", and "S" means "*" then find the value of the following:

21 Q 7 R 9 S 10 P 13

A doctor and a boy were fishing. The boy was the doctor’s son, but the doctor was not the boy’s father. Who was the doctor?

Here is a conversation between a couple who both are software professionals.

Husband: Hey! What is your date of birth?
Wife Replied Angrily: It is 591062400
Husband after doing some calculations replied, "Got It".

What is the DOB of the wife?

A solo dice game is played. In this game, upon each turn, a normal pair of dice is rolled and the score is calculated not by adding the numbers but multiplying them.

In a particular game, the score for the second roll is five more than what was achieved in the first roll. The score for the third roll is six less than what was completed in the second roll. The score for the fourth roll is eleven more than what was achieved in the third. The score for the fifth roll is eight less than what was completed in the fourth.

Can you calculate the score for each of the five throws?

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

Solve the puzzle by telling what does below picture means.

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

Bay of Bengal is in which state?