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  9. Q427

RRB Group D (Level-1 posts) 2022 · Question 427 of 598

Which of the following pairs is NOT coprime?

  1. A(17, 34)Correct
  2. B(11, 13)
  3. C(15, 17)
  4. D(17, 23)

Answer: A. (17, 34)

Explanation

The pair (17, 34) is not coprime as they share a common factor of 17, whereas coprime pairs have no common factors other than 1.

Source: RRB Group D 2022 Prev. Yr. Paper (18 Aug 2022) (Shift 3) - Prepp · reliable-secondary

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