Multiple choice

Which of the following pairs of number will have 105 as LCM?

  1. 15 and 27

  2. 27 and 61

  3. 21 and 35

  4. 15 and 21
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

15 and 21 Prime factorisation of 15 = 3 × 5 Prime factorisation of 21 = 3 × 7 LCM = 3 × 5 × 7 = 105

Keep practicing — related questions