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The LCM of two natural numbers equals their product. Which statement must be true?

Competition practiceNumber System, HCF & LCM
  • ABoth numbers are prime
  • BTheir HCF is 1
  • COne number divides the other
  • DBoth numbers are odd

Step-by-Step Solution

, so HCF = 1 (co-prime). 8 and 15 show the numbers need not be prime or odd.
Answer: B) Their HCF is 1

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