People put me on the table and cut me but do not eat me. What am I?

Two friends were betting. One said to the other, "The coin will be flipped twenty times and each time the coin lands on the head, I will give you $2 and each time it lands on the tale, you will give me $3." After flipping the coin twenty times not a single penny was exchanged among them.

How many times did the coin land on heads?

What does below chemistry rebus means?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

Which Burger Is Different in below image?

If 21x = 79x, what is the value of x?

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

Find the missing letter in the last circle logically in the given below picture.

Can you count the number of matches in the picture below ?