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Q: Find the smallest number which should be added to the smallest number divisible by 6, 9 and 15 to make it a perfect square.
  • A. 10
  • B. 9
  • C. 19
  • D. 21
Correct Answer: Option A - LCM of 6, 9 and 15 = 90 From given number 10 is only smallest number Which should be added to make it a perfect square. Then, 90 +10 = 100 Number 100 is a perfect square number.
A. LCM of 6, 9 and 15 = 90 From given number 10 is only smallest number Which should be added to make it a perfect square. Then, 90 +10 = 100 Number 100 is a perfect square number.

Explanations:

LCM of 6, 9 and 15 = 90 From given number 10 is only smallest number Which should be added to make it a perfect square. Then, 90 +10 = 100 Number 100 is a perfect square number.