I am a type of room you cannot enter or leave. Raised from the ground below, I could be poisonous or a delicious treat. What am I?

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?

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

4 fathers, 2 grand-fathers and 4 sons went to watch the movie.What is the minimum number of tickets they need to buy ?

What makes this number unique: 8,549,176,320?

Find out the missing number in the picture attached:

Which is faster, Heat or Cold ? Explain.

In a football game, Christina defeated Teresa by 2 - 0 but no man from either side scored. How can this be possible?

Find out the number of circles in the given picture having Illusion

Why is a river so rich ?