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

Find The Missing Number In the Sequence.
6 25 64 ? 32 1

I went to the bookshop and spent one-half of the money that was in my purse.

When I came out, I found that I had as many cents as I had dollars and half as many dollars as I had cents when I went in. Find the money in my purse when I entered the store.

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

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?

What always comes into a house through the keyhole?

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

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

In the picture given below, can you find out which digit will take place of the question mark?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?