Question

There are 4 prime numbers

between 10 and 20; 11, 13, 17, and 19. Are there always the
same number of prime numbers between 2 consecutive
multiples of 10? Explain.

Answer 1

No

Explanation:

As you go to larger numbers, there are more possibilities of factors for them.

For example, the internal from 20 to 30 contains only two prime numbers (23 and 29) and the interval from 90 to 100 contains only one prime (97).

However, the number of prime numbers in an interval varies. There are four prime numbers between 100 and 110 (101, 103, 107, 109).