ArithmeticQuestion 311 of 550

What is the greatest common factor of 48 and 72?

  1. 12
  2. 16
  3. 24
  4. 36
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Correct answer: 24

48 = 2⁴ × 3 and 72 = 2³ × 3². The greatest common factor = 2³ × 3 = 24.

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Questions last reviewed: 21 October 2026