Multiple choice

What is the result obtained when greatest common factor of 36 and 30 added to the greatest common factor of 28 and 35?

  1. 11

  2. 12

  3. 13

  4. 17
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Greatest common factor of 36 and 30 is 6. Factors of 28 are 1, 2, 4, 7, 14, 28. Factors of 35 are 1, 5, 7, 35. G.C.F of 28 and 35 is 7. Result obtained = 6 + 7 = 13

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