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

How can you tell a raw egg from a hard-boiled egg?

A number can be multiplied by multiple of nine
i.e 9 18 27 36 45 ...

and the resulting number consist of only one digit.

Can you identify the number ?

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

Why do we preferably have round manhole covers and not square ones?

A journalist was investigating a sacred cult in the jungles of Africa when he was caught by one of the person. He was confined in a cave till the leader arrived. The leader told him that he need to tell him a statement. If he thinks the statement is true, then the journalist head will be chopped off. If he thinks that the statement is false, his head will be smashed with a hammer.

What statement did the journalist make to survive?

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

A woman shoots her husband.

Then she holds him under water for over 5 minutes.

Finally, she hangs him.

But 5 minutes later they both go out together and enjoy a wonderful dinner together.

How can this be?

Solve the following series:
AZ, GT, MN, __, YB