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

I have 50 feet long of cloth, I need to create 50 handkerchiefs each size of 1 foot. I take one minute to cut a 1-foot handkerchief. So how long will it take to cut 50 handkerchiefs?

There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?

What work can one never finish?

A mad serial killer kidnaps people and forces them to play the game of 2 pills with them, In this game, there are pills in the table and one of them is normal pill while the other one is deadly poisonous.
The victim will choose one pill and the killer will pick the other pill and both simultaneously will swallow the pill with water.
victim dies every time.

One day the serial killer kidnaps the Joseph and forces him to play the same game with him.

Joseph solves the mystery of the two pills and remains alive.

Explain?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

Find the hidden tiger in the given optical illusion ?

There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?

Why despite killing dozens of people Charley and Wilma were not punished?