Multiple choice

Which of the following groups of prime numbers appears in the prime factorisation of 13720?

  1. 2, 5, 13

  2. 2, 3, 5, 23

  3. 2, 5, 7

  4. 2, 3, 5, 19
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The prime numbers which appear in the prime factorisation of 13720 are 2, 5 and 7.

 
2 13720
2 6860
2 3430
5 1715
7 343
7 49
7 7
  1

Keep practicing — related questions