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Two consecutive natural numbers are chosen. What is their HCF always?

Competition practiceNumber System, HCF & LCM
  • A1
  • B2
  • CThe smaller number
  • DIt depends on the numbers

Step-by-Step Solution

Any common divisor of n and n + 1 also divides their difference, 1. So the HCF is always 1: consecutive numbers are co-prime.
Answer: A) 1

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