Q.1.
How many letters represent all the Roman numerals?

Only seven letters represent all the Roman numerals: I, V, X, L, C, D, and M.

Q.2.
From what language does the word "hundred" derive?

The Old Norse word "hundredth" means 120, not 100, the literal translation being "long 100.

Q.3.
Where does the word "calculus" come from?

Calculus comes from the Ancient Greek word for pebbles due to the use of little rocks to create equations.

Q.4.
What is the smallest prime number?

A prime number is always greater than 1 but can't be formed by multiplying two smaller numbers. That means the smallest prime number is 2. It's also the only even prime number.

Q.5.
Which word does not mean zero?

Score is the slang word for twenty (20).

Q.6.
What is the Roman numeral for zero?

There's no numeral for zero as it didn't exist as a number in Roman times. They just said "nulla" for zero.

Q.7.
What is a googol?

A googol is a big number. It has 100 zeros added to it, and the search engine Google is named after it.

Q.8.
What is the study of triangles called?

The study of the relationship between triangles, sides, and angles in trigonometry.

Q.9.
How many types of triangle are there?

There are six types of triangle: equilateral, right-angled, isosceles, obtuse, scalene, and acute.

Q.10.
Where do our numbers come from?

The number we use today comes from the Hindu/Arabic system which was developed over a thousand years ago.