HCF and LCM Aptitude Questions Practice Question and Answer

Q:

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

1491 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:

What is the highest common factor of 2x3 + x2 -x -2 and 3x3- 2x2 + x - 2 ? 

1487 0

  • 1
    x – 1
    Correct
    Wrong
  • 2
    x + 1
    Correct
    Wrong
  • 3
    2x + 1
    Correct
    Wrong
  • 4
    2x – 1
    Correct
    Wrong
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Answer : 1. " x – 1"

Q:

When a number is divided by 15, 20 or 35, each time the remainder is 8. Then the smallest number is 

1474 0

  • 1
    328
    Correct
    Wrong
  • 2
    338
    Correct
    Wrong
  • 3
    428
    Correct
    Wrong
  • 4
    427
    Correct
    Wrong
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Answer : 3. "428 "

Q:

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

1453 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:

The greatest number, which when subtracted from 5834, gives a number exactly divisible by each of 20, 28, 32 and 35, is 

1450 0

  • 1
    1120
    Correct
    Wrong
  • 2
    4714
    Correct
    Wrong
  • 3
    5200
    Correct
    Wrong
  • 4
    5600
    Correct
    Wrong
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Answer : 2. "4714 "

Q:

A, B and C start running around a circular field having circumference 144 metre at the same time from the same point. Speeds of A, B and C are 6 m/minute, 8 m/minute and 12 m/minute. Find after how much time, they will meet again at the same point for the first time.

1450 1

  • 1
    72 minutes
    Correct
    Wrong
  • 2
    36 minutes
    Correct
    Wrong
  • 3
    144 minutes
    Correct
    Wrong
  • 4
    18 minutes
    Correct
    Wrong
  • 5
    None of these
    Correct
    Wrong
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Answer : 1. "72 minutes"

Q:

The largest 4 - digit number exactly divisible by each of 12, 15, 18 and 27 is : 

1443 0

  • 1
    9930
    Correct
    Wrong
  • 2
    9960
    Correct
    Wrong
  • 3
    9690
    Correct
    Wrong
  • 4
    9720
    Correct
    Wrong
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Answer : 4. "9720 "

Q:

Three sets of English, Mathematics and Science books containing  336, 240, 96 books respectively have to be stacked in such a way that all the books are stored subject wise and the height of each stack is the same. Total number of stacks will be: 

1415 0

  • 1
    22
    Correct
    Wrong
  • 2
    48
    Correct
    Wrong
  • 3
    14
    Correct
    Wrong
  • 4
    21
    Correct
    Wrong
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Answer : 3. "14"

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