HCF and LCM Practice Question and Answer

Q:

Two numbers are in the ratio 3: 4. If their LCM is 240, the E smaller of the two numbers is: 

1017 1

  • 1
    100
    Correct
    Wrong
  • 2
    80
    Correct
    Wrong
  • 3
    60
    Correct
    Wrong
  • 4
    50
    Correct
    Wrong
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Answer : 3. "60 "

Q:

Two numbers are in the ratio 3 : 4. Their LCM is 84 . The greater number is: 

989 0

  • 1
    21
    Correct
    Wrong
  • 2
    24
    Correct
    Wrong
  • 3
    28
    Correct
    Wrong
  • 4
    84
    Correct
    Wrong
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Answer : 3. "28"

Q:

The smallest number, which when increased by 5 is divisible by each of 24, 32, 36 and 54, is 

985 0

  • 1
    571
    Correct
    Wrong
  • 2
    427
    Correct
    Wrong
  • 3
    869
    Correct
    Wrong
  • 4
    859
    Correct
    Wrong
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Answer : 4. "859 "

Q:

The sum of the HCF and LCM of two numbers is 680 and the LCM is 84 times the HCF. If one of the numbers is 56, the other is : 

971 0

  • 1
    84
    Correct
    Wrong
  • 2
    12
    Correct
    Wrong
  • 3
    8
    Correct
    Wrong
  • 4
    96
    Correct
    Wrong
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Answer : 4. "96"

Q:

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

971 0

  • 1
    24
    Correct
    Wrong
  • 2
    48
    Correct
    Wrong
  • 3
    56
    Correct
    Wrong
  • 4
    60
    Correct
    Wrong
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Answer : 4. "60"

Q:

HCF and LCM of two numbers are 7 and 140 respectively. If the numbers are between 20 and 45, the sum of the numbers is: 

963 0

  • 1
    63
    Correct
    Wrong
  • 2
    56
    Correct
    Wrong
  • 3
    70
    Correct
    Wrong
  • 4
    77
    Correct
    Wrong
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Answer : 1. "63 "

Q:

The LCM of two numbers is 12 times their HCF. The sum of the HCF and the LCM is 403. If one of the number is 93, then the other number is. 

960 0

  • 1
    124
    Correct
    Wrong
  • 2
    128
    Correct
    Wrong
  • 3
    134
    Correct
    Wrong
  • 4
    138
    Correct
    Wrong
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Answer : 1. "124 "

Q:

What is the LCM (least common multiple) of 57 and   93?

946 0

  • 1
    1576
    Correct
    Wrong
  • 2
    1767
    Correct
    Wrong
  • 3
    1567
    Correct
    Wrong
  • 4
    1919
    Correct
    Wrong
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Answer : 2. "1767"

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