HCF and LCM Practice Question and Answer

Q:

Find the HCF of 60, 148 and 382.

801 0

  • 1
    6
    Correct
    Wrong
  • 2
    24
    Correct
    Wrong
  • 3
    4
    Correct
    Wrong
  • 4
    2
    Correct
    Wrong
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Answer : 4. "2"

Q:

On dividing 256a2b2c2 by 64a2, we get

787 0

  • 1
    4
    Correct
    Wrong
  • 2
    4b2c2
    Correct
    Wrong
  • 3
    2c2 
    Correct
    Wrong
  • 4
    2b
    Correct
    Wrong
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Answer : 2. "4b2c2"

Q:

The L.C.M and H.C.F of the two numbers are 84 and 21 respectively. If the numbers have a ratio of 1: 4, what is the larger number?

778 0

  • 1
    56
    Correct
    Wrong
  • 2
    84
    Correct
    Wrong
  • 3
    82
    Correct
    Wrong
  • 4
    15
    Correct
    Wrong
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Answer : 2. "84"

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Answer : 2. "14"

Q:

The greatest four digit number which is exactly divisible by each one of the numbers 12, 18, 21 and 28.

774 0

  • 1
    9828
    Correct
    Wrong
  • 2
    9882
    Correct
    Wrong
  • 3
    9928
    Correct
    Wrong
  • 4
    9288
    Correct
    Wrong
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Answer : 1. "9828"

Q:

Which of the following numbers is divisible by 11?

770 0

  • 1
    5214341
    Correct
    Wrong
  • 2
    5648741
    Correct
    Wrong
  • 3
    6598321
    Correct
    Wrong
  • 4
    2378965
    Correct
    Wrong
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Answer : 1. "5214341"

Q:

What is the L.C.M of 12, 36, 6 and 9?

763 0

  • 1
    36
    Correct
    Wrong
  • 2
    144
    Correct
    Wrong
  • 3
    108
    Correct
    Wrong
  • 4
    62
    Correct
    Wrong
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Answer : 1. "36"

Q:

The HCF of two numbers is 21 and their LCM is 840. If one of the numbers is 49, then the other number is:

741 0

  • 1
    650
    Correct
    Wrong
  • 2
    360
    Correct
    Wrong
  • 3
    540
    Correct
    Wrong
  • 4
    810
    Correct
    Wrong
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Answer : 2. "360 "

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