Question

Find the pairs of natural numbers whose least common multiple is 78 and the greatest common divisor is 13.

• A. 58 and 13 or 16 and 29
• B. 38 and 23 or 36 and 49
• C. 18 and 73 or 56 and 93
• D. 78 and 13 or 26 and 39

Answer 1

The correct option is D 78 and 13 or 26 and 39

LCM = 78 and GCD =13
Clearly 13, 78 and 26 , 39 are the two numbers