HCF and LCM Aptitude Questions Practice Question and Answer

Q:

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

1553 0

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

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Answer : 2. "6"

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?

1512 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:

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 

1504 0

  • 1
    Correct
    Wrong
  • 2
    Correct
    Wrong
  • 3
    Correct
    Wrong
  • 4
    Correct
    Wrong
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Answer : 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?  

1461 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. 

1440 0

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

Q:

A fraction becomes when 4 is subtracted from its numerator and 1 is added to its denominator. If 2 and 1 are respectively added to its numerator and the denominator, it becomes . Then, the LCM of the numerator and denominator of the fraction, must be 

1400 0

  • 1
    5
    Correct
    Wrong
  • 2
    70
    Correct
    Wrong
  • 3
    14
    Correct
    Wrong
  • 4
    350
    Correct
    Wrong
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Answer : 2. "70"

Q:

The HCF and LCM of two number are 20 and 120, respectively. If one number is 50 percent more than the other number, then which is the smaller number.

1367 0

  • 1
    80
    Correct
    Wrong
  • 2
    40
    Correct
    Wrong
  • 3
    60
    Correct
    Wrong
  • 4
    20
    Correct
    Wrong
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Answer : 2. "40"

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