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

What English word has three consecutive double letters?

John is found dead in a bare field. Nobody killed John,
John did not commit suicide.

Inspector Jacob found a bag just a few meters away from John which could save his life. What was in the bag?

What does this rebus riddle mean?

Guess the hidden movie name?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

What is the next number?

77, 49, 36, 18 ?

I can be cracked, made, told, and played. What am I?

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

There was once a college that offered a class on probability applied to the real world. The class was relatively easy, but there was a catch. There were no homework assignments or tests, but there was a final exam that would have only one question on it. When everyone received the test paper it was a blank sheet of paper with a solitary question on it: 'What is the risk?'.Most students were able to pass, but only one student received 100% for the class! Even stranger was that he only wrote down one word!
What did he write?