QA – Placement Quizzes | Numbers, LCM and HCF | Question 12

The LCM of two co-prime numbers is 117. What is the sum of squares of the numbers ?
(A) 220
(B) 1530
(C) 250
(D) 22


Answer: (C)

Explanation: 117 = 3 x 3 x 13
As the numbers are co-prime, HCF = 1.
So, the numbers have to be 9 and 13.
9² = 81
13² = 169
Therefore, required answer = 250

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