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The least number of five digits that have 144 their HCF is__________?

Correct answer: B. 10080

  • A. 10085
  • B. 10080
  • C. 10075
  • D. 10070

Explanation

The least five-digit multiple of 144 is found by taking the first multiple at or above 10000: 144 x 69 = 9936, while 144 x 70 = 10080. Thus the answer is 10080. The likely mistake is choosing 10085, which is not divisible by 144.

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