Identify The phrase in the picture.

Remove two matchsticks to make the below equation correct.

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?

When we see 2 but call 10?

If eleven plus two equals one, what does nine plus five equal?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

I am Huge on Sunday and Saturday.
I am small from Tuesday to Thursday.
I do not exist on Monday and Friday.
Who am I?

Christina, Allison and Lena are 3 daughters of John a well-known Mathematician, When I asked John the age of their daughters. He replied "The current age of her daughters is prime. Also, the difference between their ages is also prime."

How old are the daughters?

How can a man go eight days without sleep?