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

A wealthy man lives alone in a small cottage. Being partially handicapped he had everything delivered to his cottage. The mailman was delivering a letter one Thursday when he noticed that the front door was ajar. Through the opening he could see the man's body lying in a pool of dried blood. When a police officer arrived he surveyed the scene. On the porch were two bottles of warm milk, Monday's newspaper, a catalog, flyers, and unopened mail. The police officer suspects it was foul play. Who does he suspect and why?

You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?

Can you find a number that lies one third of the distance between 1/3 and 2/3?

I’m tall when I’m young, and I’m short when I’m old. What am I?

Find three numbers such that When we multiply three numbers, we will get the prime numbers. The difference between the second and the first number is equal to the third and second.

Give it food and it will live; give it water and it will die.

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

The product of three consecutive numbers is 7980.
Then the sum of these consecutive numbers would be?

What do you answer even though it never asks you questions?