A

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Q. The HCF and LCM of two numbers m and n are respectively 6 and 210. If m + n = 72, then 1/m + 1/n is equal to

  • (A) 1/35
  • (B) 3/35
  • (C) 5/37
  • (D) 2/35
  • Correct Answer - Option(D)
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  • Filed under category Math
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Explanation by: Admin

We have, m x n = 6 x 210 = 1260
∴ 1/m + 1/n = (m + n)/mn = 72/1260 = 4/70 = 2/35

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