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      Question

      The least perfect square number which is divisible by 9,

      12, 15, 24:
      A 900 Correct Answer Incorrect Answer
      B 1600 Correct Answer Incorrect Answer
      C 3600 Correct Answer Incorrect Answer
      D 6400 Correct Answer Incorrect Answer

      Solution

      lcm OF┬а 9, 12, 15, 24. 9=3├Ч3 12=2├Ч2├Ч3 15=3├Ч5 24=2├Ч2├Ч2├Ч3 .LCM=2├Ч2├Ч2├Ч3├Ч3├Ч5=360 To make the number perfect square multiply by 2 and 5 in 360, then =360├Ч5├Ч2 =3600

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