HCF and LCM Practice Question and Answer

Q:

If the least common multiple of two numbers, 1728 and K is 5184, then how many values of K are possible? 

2730 0

  • 1
    6
    Correct
    Wrong
  • 2
    7
    Correct
    Wrong
  • 3
    11
    Correct
    Wrong
  • 4
    8
    Correct
    Wrong
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Answer : 2. "7"

Q:

The maximum number of students among whom 1001 pens and 910 pencils can be distributed in such a way that each student gets same number of pens and same number of pencils, is: 

1470 0

  • 1
    91
    Correct
    Wrong
  • 2
    910
    Correct
    Wrong
  • 3
    1001
    Correct
    Wrong
  • 4
    1911
    Correct
    Wrong
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Answer : 1. "91 "

Q:

Find the least multiple of 23, which when divided by 18, 21 and 24 leaves the remainder 7, 10 and 13 respectively.

1199 0

  • 1
    3013
    Correct
    Wrong
  • 2
    3024
    Correct
    Wrong
  • 3
    3002
    Correct
    Wrong
  • 4
    3036
    Correct
    Wrong
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Answer : 1. "3013"

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"

Q:

The greatest common factor of two co-prime numbers will be

538 0

  • 1
    0
    Correct
    Wrong
  • 2
    1
    Correct
    Wrong
  • 3
    2
    Correct
    Wrong
  • 4
    3
    Correct
    Wrong
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Answer : 2. "1"

Q:

If the LCM of two numbers is 288 and their ratio is 4 : 9, then HCF of the numbers is : 

560 0

  • 1
    7
    Correct
    Wrong
  • 2
    8
    Correct
    Wrong
  • 3
    9
    Correct
    Wrong
  • 4
    11
    Correct
    Wrong
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Answer : 2. "8"

Q:

By what least number should 21600 be multiplied to make it a perfect square?

515 0

  • 1
    52
    Correct
    Wrong
  • 2
    23
    Correct
    Wrong
  • 3
    69
    Correct
    Wrong
  • 4
    None
    Correct
    Wrong
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Answer : 4. "None "

Q:

The sum of two and the product of 23 is 120. The sum of the areas will be:

510 0

  • 1
    289
    Correct
    Wrong
  • 2
    263
    Correct
    Wrong
  • 3
    486
    Correct
    Wrong
  • 4
    313
    Correct
    Wrong
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Answer : 1. "289"

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