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

For an extra income, John decided to work at a Hotel for one hour daily. The manager offers him that they will pay him $11 after every 11 days.
However, John offered a different proposition to the manager. The offers stand as:
He will be paid just a penny on his first day.
Two pence will be paid on the second day,
Four pence will be paid on the third day.
And so on till the 11th day.

Should the Hotel manager accept his offer?

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

The dirtier I get, the whiter I look. Who am I?

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.

Identify the hidden meaning behind this picture?

The more of this there is, the less you see. What is it?

We have arranged an array of numbers below. What you have to do is use any kind of mathematical symbol you know excluding any symbol that contains a number like cube root. You can use any amount of symbols but you have to come up with a valid equation for all of them.

0 0 0 = 6
1 1 1 = 6
2 + 2 + 2 = 6
3 3 3 = 6
4 4 4 = 6
5 5 5 = 6
6 6 6 = 6
7 7 7 = 6
8 8 8 = 6
9 9 9 = 6