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.

9^{2} = 81

13^{2} = 169

Therefore, required answer = 250

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