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Find the H.C.F of 12, 16, 18 and 24?

Correct answer: B. 2

  • A. 1
  • B. 2
  • C. 3
  • D. 4

Explanation

The common factors are found successively: gcd(12, 16) = 4, gcd(4, 18) = 2, and gcd(2, 24) = 2. Thus the HCF is 2. A student may choose 4 after considering only 12 and 16, but 4 does not divide 18.

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