Can you find out what is missing?

1 3 5
2 4 ?

Hint: It's not six. Think out of the box.

How can you take 2 from 5 and leave 4?

It is a six-letter word.
The first four letters are me.
The second and last letters are the same.
The fourth second and last letter is payment.

Who is it?

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

How is a fly different from a mosquito?

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?

Why do people go to bed?

What number divided by 4 is the same as that number minus 4?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

Identify The phrase in the picture.