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Problems on L.C.M and H.C.F in Aptitude MCQ Quiz (Multiple Choice Questions And Answers)

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81.  The H.C.F of two numbers is 8. Which of the following can never be their L.C.M?

  • 48
  •  24
  • 60
  • 56

82.  The H.C.F of two numbers is 23 and the other two factors of their L.C.M are 13 and 14. The larger of the two numbers is:

  • 299
  • 276
  • 322
  • 345

83. Which of the following fractions is the largest?

  • 63/80
  • 13/16
  • 7/8
  • 31/40

84. What will be the least number which when doubled will be exactly divisible by 12, 18, 21 and 30?

  • 196
  • 1260
  • 630
  • 2520

85. The smallest fraction, which each of 6/7, 5/14, 10/21 will divide exactly is:

  • 30/98
  • 50/294
  • 30/7
  • 60/147