Can you make four (4) nines (9) equal 100?

I know a nine-letter word having only one vowel.
Do you ?

Can you identify if it's a murder or a suicide ?

John is asked to stand behind Jacob and Jacob is asked to stand behind John. Both of them feel confused about it and don't know what to do?

But it is quite possible, do you know how?

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

You order chicken wings at KFC in the boxes of 6, 9 and 20. What is the largest number of wings that you cannot obtain by buying in any combination of the boxes?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

What question can you never answer yes to?

Jigsaw captured 100 people and make them stand in a circle and all these people are labelled as Person1, Person2, Person3... Person100. He made them play a crazy game in which Person 1 shot Person 2 and pass the gun to the next person and so on until one stands alive.

Which person will survive in the end?

What is so fragile that saying its name breaks it?