Multiple choice

What is the result obtained when greatest common factor of 64 and 80 takes away 11?

  1. 5

  2. 9

  3. 7

  4. 11

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

Factors of 64 are 1, 2, 4, 8, 16, 32, 64. Factors of 80 are 1, 2, 4 5, 8, 10, 16, 20, 40, 80. Greatest common factor of 64 and 80 is 16. Result obtained = 16 - 11 = 5