Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

Using Only Five 5's and any mathematical operator make sum as 37

Three people enter a room and have a green or blue hat placed on their heads. They cannot see their own hat but can see the other hats.
The colour of each hat is purely random. They could all be green, blue, or any combination of green and blue.
They need to guess their own hat colour by writing it on a piece of paper, or they can write 'pass'.
They cannot communicate with each other in any way once the game starts. But they can have a strategy meeting before the game.
If at least one of them guesses correctly they win $10,000 each, but if anyone guesses incorrectly they all get nothing.
What is the best strategy?

What is the next number in the series?

15 29 56 108 208 ?

Replace the question mark with the correct number below.

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

Whats the next number in the below number sequence pattern.

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

A guy in his thirties is found dead in a forest. The shocking thing about the body is that he is wearing his swimming trunks snorkel and a facemask.

For your information, the nearest lake is some 10 miles away and the sea is hundreds of miles away.

How did he die then?