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Mark the coprimer number ?2, 4 3, 6 4, 110 2, 9
  1. 2, 4
  2. 3, 6
  3. 4, 110
  4. 2,9
Explanation

Co-prime numbers have no common factor except 1.

Their HCF (Highest Common Factor) is 1.

2, 4

  • Factors of 2 = 1, 2
  • Factors of 4 = 1, 2, 4
  • Common factors = 1, 2
  • HCF = 2  Not co-prime

3, 6

  • Factors of 3 = 1, 3
  • Factors of 6 = 1, 2, 3, 6
  • Common factors = 1, 3
  • HCF = 3  Not co-prime

4, 10

  • Factors of 4 = 1, 2, 4
  • Factors of 10 = 1, 2, 5, 10
  • Common factors = 1, 2
  • HCF = 2  Not co-prime

2, 9

  • Factors of 2 = 1, 2
  • Factors of 9 = 1, 3, 9
  • Common factor = 1
  • HCF = 1 Co-prime

Last updated 17 july 2026 by NA

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