If a wheel has 54 spokes, how many spaces are there between the spokes?

Birbal was jester, counsellor, and fool to the great Moghul emperor, Akbar.
The villagers loved to talk of Birbal's wisdom and cleverness,
and the emperor loved to try to outsmart him.
One day Akbar (emperor) drew a line across the floor.
"Birbal," he ordered, "you must make this line shorter, but you cannot erase any bit of it."
Everyone present thought the emperor had finally outsmarted Birbal.
It was clearly an impossible task.
Yet within moments the emperor and everyone else present had to agree that Birbal had made the line shorter without erasing any of it.
How could this be?

I am dry when I go inside, but wet when I am pulled outside.
The longer I am inside, the stronger I get
When I am completely out, I am wet and I literally sag
Who am I?

By moving just one matchstick, you need to make the below statement true. Can you do it?

What does a man do only once in his lifetime, but women do once a year after they are 29?

How much will a 38° angle measure when looked at under a microscope that magnifies ten times?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

The following sentence is false. The preceding sentence is true.
Are these two sentences true or false?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

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?