Replace the question mark with the number below given a simple math problem.

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

It can't be seen, can't be felt, can't be heard, and can't be smelt.
It lies behind stars and under hills, And empty holes it fills.
It comes first and follows after, Ends life, and kills laughter.
What is it?

I am working in a bus company. The company recently went under expansion and therefore there was not enough room for all the buses. As a result, twelve buses had to be stored outside.

If the company decides to expand the garage space by forty percent, enough space to accommodate the current buses will be created leaving enough space for twelve more buses if the need arises in future.

Can you calculate the number of buses that the company owns at present?

How many times can you subtract the number 5 from 25?

What is the last thing you take off before bed?

What number comes next in this sequence:
7 8 5 5 3 4 4 _

Prove that twice of ten is the same as twice of eleven.

Can you replace the question mark with the correct number in the below table sequence?

A woman who works in a sweet shop has a measurement of 32-26-36, is 5"4" tall, and wears size "6" shoes. What do you think she weighs?