HCF and LCM Practice Question and Answer

Q:

The product of the LCM and HCF of two numbers is 24. The difference of the two numbers is 2. Find the numbers? 

929 0

  • 1
    2 and 4
    Correct
    Wrong
  • 2
    6 and 4
    Correct
    Wrong
  • 3
    8 and 6
    Correct
    Wrong
  • 4
    8 and 10
    Correct
    Wrong
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Answer : 2. "6 and 4"

Q:

The ratio of two numbers is 4:5 and their LCM is 120. The numbers are

2439 0

  • 1
    30, 40
    Correct
    Wrong
  • 2
    40, 32
    Correct
    Wrong
  • 3
    24, 30
    Correct
    Wrong
  • 4
    36, 20
    Correct
    Wrong
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Answer : 3. "24, 30"

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:

A number of friends decided to go on picnic and planned to spend Rs. 108 on eatables. Three of them however did not turn up. As a consequence, each one of the remaining had to contribute Rs 3. extra. The number of them who attended the picnic was:

2716 0

  • 1
    15
    Correct
    Wrong
  • 2
    12
    Correct
    Wrong
  • 3
    9
    Correct
    Wrong
  • 4
    6
    Correct
    Wrong
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Answer : 3. " 9"

Q:

The HCF and LCM of two numbers are 12 and 336 respectively. If one of the number is 84, the other is

1092 0

  • 1
    36
    Correct
    Wrong
  • 2
    48
    Correct
    Wrong
  • 3
    72
    Correct
    Wrong
  • 4
    96
    Correct
    Wrong
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Answer : 2. "48"

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Answer : 2. "6"

Q:

The sum of two numbers is 84 and their HCF is 12. Total number of such pairs of number is 

1823 0

  • 1
    2
    Correct
    Wrong
  • 2
    3
    Correct
    Wrong
  • 3
    4
    Correct
    Wrong
  • 4
    5
    Correct
    Wrong
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Answer : 2. "3"

Q:

If the ratio of two numbers is 13 : 15 and their L.C.M. is 39780. Then the numbers are?

1458 0

  • 1
    2550 and 3450
    Correct
    Wrong
  • 2
    2652 and 3060
    Correct
    Wrong
  • 3
    2250 and 2340
    Correct
    Wrong
  • 4
    2450 and 3450
    Correct
    Wrong
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Answer : 2. "2652 and 3060"

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