Multiple choice

A prime number always ends with which of the following digits?

  1. 1, 3, 5, 7

  2. 1, 3, 5, 9

  3. 1, 3, 7, 9

  4. 1, 5, 7, 9

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The numbers ending with 1, 3, 7, 9 only can be prime.