How can a man go eight days without sleep?

If,
9 * 8 * 7 = 65
8 * 7 * 6 = 50
7 * 6 * 5 = 37

Find
6 * 5 * 4 = ?

What English word has three consecutive double letters?

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

A container contains 100 eggs. They can be either fresh or rotten. What is sure is the fact that there is at least one fresh egg in that container.

If you are asked to pick two eggs randomly from the container, at least one of them will be rotten.

Can you calculate how many eggs in that container are fresh?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

Look at the picture and find out which square is not linked with any of the other squares.

Solve below popular number sequence
314 159 265 358 979 323 846 ?

I am a five-letter word and comprises two different vowels and three same consonants. I am so strong that I can spoil your entire work.

Can you find out who am I?