Multiple choice

What is the greatest common factor of 21 and 35?

  1. 1

  2. 3

  3. 5

  4. 7
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Factors of 21 = 1, 3, 7, 21 Factors of 35 = 1, 5, 7, 35 Greatest common factor = 7

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