using four eights (8) and a one (1) and one mathematical symbol , create the number 100

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

Rearrange the letters in "new door" to make one word.

Before Mount Everest was discovered, what was the highest mountain in the world?

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

In a mathematical quiz, you are asked the following question:

Use three 9s in a mathematical expression without dividing or multiplying to form the number one.

Can you answer the question?

What demands an answer, but asks no questions

How many letters are in the alphabet?

A 3 digit number is such that it's unit digit is equal to the product of the other two digits which are prime. Also, the difference between it's reverse and itself is 396.

What is the sum of the three digits?

A man looks at a painting in a museum and says, “Brothers and sisters I have none, but that man’s father is my father’s son.” Who is in the painting?