When 99 is considered higher than 100?

A man hijacks an aeroplane transporting both passengers(8 of them) and valuable cargo. After taking the cargo, the man demands nine parachutes, puts one of them on, and jumps, leaving the other eight behind. Why did he want eight?

There is something which you can be arrested for attempting but not for successfully completing.

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

In the image below, can you find the value of an angle(y)

It is a nine-letter word.
The exact opposite of the phrase "friendly and outgoing"
It contains the word "over".
It starts will a vowel.

What is it?

Three fair coins are tossed in the air and they land with heads up. Can you calculate the chances that when they are tossed again, two coins will again land with heads up?

A boy was driving a car, a girl took a lift from her. She asked his name. The boy said - my name is hidden in my car’s number, find it if you can. After this, she got down Car number was [ WV733N ] Can you guess the name now?

You can hear me, but you can't touch or see me.

What am I?

Who can jump higher than a Mountain?