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Doctors Medicines MCQs Q&A

  1. Only a
  2. Only b
  3. Only c
  4. Both a and b
  5. Both a and c
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1 Answers

Option 5 : Both a and c

Consider 1st pair,

5 = 1 × 5

105 = 3 × 5 × 7

⇒ H.C.F. = 5

⇒ L.C.M. = 105

Consider 2nd pair,

15 = 3 × 5

105 = 3 × 5 × 7

⇒ H.C.F. = 15

⇒ L.C.M. = 105

Consider 3rd pair,

15 = 3 × 5

35 = 5 × 7

⇒ H.C.F. = 5

⇒ L.C.M. = 105

Both (5, 105) and (15, 35) have H.C.F. = 5 and L.C.M. = 105
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