Number 3

1 mark · Easy

Which statement is true?

Show answer

Correct option: 2 is the only even prime number.

Common mistakes: Choosing 'All prime numbers are odd' (wrong, because 2 is even); Choosing '1 is a prime number' (1 is not prime)

Show mark scheme and worked solution

Marking points

B1 · 1 mark · Marks for selecting '2 is the only even prime number.'

Worked solution

2 is the only even prime number. 1 is not prime. 15 is not prime. There is one even prime number, which is 2.