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?

In the picture given below, can you find out which digit will take place of the question mark?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?

There was a strange boy who was born before his father. How can this be possible?

You bought me for dinner but never eat me. What am I?

In the Thar desert, 3 men found a big 24L Jar is full of water. Since there is a shortage of water so they decided to distribute the water among themselves such that they all have equal amounts of it. But they only have a 13L, a 5L and an 11-litre Jar.

How do they do it?

O_er_t_o_

Complete the missing letters of the given word.

There was a minor accident with a doctor's son but the doctor noticed no major injury. After the treatment, the father of that doctors son is sitting with the son of the doctor without the doctor being in the room.

How can this be possible?