Replace the question mark with the correct number in the below-given picture?

You have a thousand Re. 1 coins with you. You have ten bags with you and you can put any number of coins in each of the bags. The condition is that if someone asks you for any amount between 1 and 1000, you must be able to give that amount by just giving the bag (you are not allowed to open the bag and give coins).

How will you do it?

How many bananas can you eat if your stomach is empty?

Count the number of lines in the image below ?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

Mr Black, Mr Gray, and Mr White are fighting in a truel. They each get a gun and take turns shooting at each other until only one person is left. Mr Black, who hits his shot 1/3 of the time, gets to shoot first. Mr Gray, who hits his shot 2/3 of the time, gets to shoot next, assuming he is still alive. Mr White, who hits his shot all the time, shoots next, assuming he is also alive. The cycle repeats. If you are Mr Black, where should you shoot first for the highest chance of survival?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

I am the one who remains awake when you sleep. But I need to rest when you awake. Who Am I?

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?

O_er_t_o_

Complete the missing letters of the given word.