HCF and LCM Aptitude Questions Practice Question and Answer

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Answer : 2. "6"

Q:

If A and B are the HCF and LCM respectively of two algebraic expressions x and y, and A + B = x + y, then the value of A3 + B3 is 

1762 0

  • 1
    $$x^3-y^3 $$
    Correct
    Wrong
  • 2
    $$x^3$$
    Correct
    Wrong
  • 3
    $$y^3$$
    Correct
    Wrong
  • 4
    $$x^3 + y^3$$
    Correct
    Wrong
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Answer : 4. "$$x^3 + y^3$$"

Q:

The HCF of two numbers, each having three digits, is 17 and their LCM is 714. The sum of the numbers will be: 

1751 0

  • 1
    221
    Correct
    Wrong
  • 2
    731
    Correct
    Wrong
  • 3
    289
    Correct
    Wrong
  • 4
    391
    Correct
    Wrong
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Answer : 1. "221 "

Q:

The sum of two numbers is 232 and their HCF is 29. What is the numbers of such pairs of numbers satisfied the above condition?

1729 0

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

Q:

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

1673 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 ratio of HCF and LCM of two numbers a and b is 1:30 and the difference between the HCF and LCM is 493. Find the possible number of pairs of a and b.

1630 0

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

Q:

What is the minimum number of square marbles required to tile a floor of length 5 meters 78 cm. and width 3 meters 74 cm?  

1622 0

  • 1
    540
    Correct
    Wrong
  • 2
    748
    Correct
    Wrong
  • 3
    176
    Correct
    Wrong
  • 4
    187
    Correct
    Wrong
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Answer : 4. "187 "

Q:

If the HCF and LCM of 5x and 8x are 9 and 360 respectively, find value of x. 

1611 0

  • 1
    5
    Correct
    Wrong
  • 2
    7
    Correct
    Wrong
  • 3
    9
    Correct
    Wrong
  • 4
    8
    Correct
    Wrong
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Answer : 3. "9 "

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