Multiple choice

The pairs of natural numbers having least common multiple 78 and greatest common divisor 13 are

  1. 58 and 13 or 16 and 39

  2. 68 and 23 or 36 and 49

  3. 18 and 73 or 56 and 93

  4. 78 and 13 or 26 and 39

  5. 88 and 13 or 26 and 39
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

As GCD or HCF is 13, so the pair must be divisible by 13.

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