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RRB Junior Engineer / DMS / CMA 2019 · Question 97 of 3719

Which pair of these numbers is cop rime?

Mathematics - Miscellaneous

  1. Aa. 4, 12
  2. Bb. 33, 35Correct
  3. Cc. 15, 9
  4. Dd. 45, 9

Answer: B. b. 33, 35

Explanation

Co-prime Numbers. Co-prime numbers are pairs of numbers that do not have any common factor other than 1. There should be a minimum of two numbers to form a set of co-prime numbers. Example 33, 35 The factors of 33 are 3 and 11 The factors of 35 are 7 and 5 33 and 35 have no common factor except 1, Hence 33 and 35 are co-prime numbers.

Source: RRB JE 2019 CBT-1 (24-May-2019 Shift-1) — ixambee compilation with answer key and solutions · reliable-secondary

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