Multiple choice

Find the H.C.F. of 20 and 30.

  1. 2

  2. 3

  3. 10

  4. 20

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

Factors of 20 = 1, 2, 4, 5, 10, 20 Factors of 30 = 1, 2, 3, 5, 6, 10, 15, 30 H.C.F. = 10