using four eights (8) and a one (1) and one mathematical symbol , create the number 100

Only one color, but not one size,
Stuck at the bottom, yet easily flies.
Present in sun, but not in rain,
Doing no harm, and feeling no pain.
What is it?

What seven-letter word has hundreds of letters in it?

During which month do people sleep the least?

Remove two matchsticks to make the below equation correct.

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

Why blonde cannot dial 911?

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

What is red and smells like blue paint?

Can you name some countries which do not have the alphabet 'A' in them?