He read scores of books.

He used his alphanumeric skills to create a computer program.

After the earthquake, the number of dead increased rapidly.

Please adjust the frequency of this radio.

He thought for a few seconds before giving an answer.

A composite number, unlike a prime number, is represented by the product of two or more natural numbers.

What is the play count of this video?

Amicable numbers refer to a pair of natural numbers that have a special relationship in number theory, a branch of mathematics.

In mathematics, a perfect number refers to a number where the sum of its divisors, excluding the number itself, equals the number.

In math class, I learned about deficient numbers.