HCF and LCM Aptitude Questions Practice Question and Answer

Q:

Find the HCF of 60, 148 and 382.

1522 0

  • 1
    6
    Correct
    Wrong
  • 2
    24
    Correct
    Wrong
  • 3
    4
    Correct
    Wrong
  • 4
    2
    Correct
    Wrong
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Answer : 4. "2"

Q:

a and b are two whole numbers and c is their HCF, then the LCM of those two numbers is

1515 0

  • 1
    ab/c
    Correct
    Wrong
  • 2
    abc
    Correct
    Wrong
  • 3
    bc
    Correct
    Wrong
  • 4
    ac/b
    Correct
    Wrong
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Answer : 1. "ab/c"

Q:

What is the greatest common factor of 2³ × 7² and 2⁵ × 3¹?

1500 0

  • 1
    2³ 3¹
    Correct
    Wrong
  • 2
    2³ 7² 3¹
    Correct
    Wrong
  • 3
    2³
    Correct
    Wrong
  • 4
    3¹ 7²
    Correct
    Wrong
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Answer : 3. "2³"

Q:

The LCM of two numbers is 864 and their HCF is 144. If one of the numbers is 288, the other number is:

1488 0

  • 1
    432
    Correct
    Wrong
  • 2
    144
    Correct
    Wrong
  • 3
    576
    Correct
    Wrong
  • 4
    1296
    Correct
    Wrong
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Answer : 1. "432 "

Q:

If the least common multiple(LCM) of two numbers is 231, the Highest common multiple(H.C.F)  of both numbers is 11 and the first number is 77, then the second number is

1478 0

  • 1
    47
    Correct
    Wrong
  • 2
    37
    Correct
    Wrong
  • 3
    57
    Correct
    Wrong
  • 4
    33
    Correct
    Wrong
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Answer : 4. "33"

Q:

The HCF of two numbers is 4 and the two other factors of LCM are 5 and 7. Find the smaller of the two numbers.

1475 0

  • 1
    10
    Correct
    Wrong
  • 2
    14
    Correct
    Wrong
  • 3
    20
    Correct
    Wrong
  • 4
    28
    Correct
    Wrong
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Answer : 3. "20"

Q:

The L.C.M and H.C.F of the two numbers are 84 and 21 respectively. If the numbers have a ratio of 1: 4, what is the larger number?

1455 0

  • 1
    56
    Correct
    Wrong
  • 2
    84
    Correct
    Wrong
  • 3
    82
    Correct
    Wrong
  • 4
    15
    Correct
    Wrong
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Answer : 2. "84"

Q:

If the product of three consecutive numbers is 210 then sum of the smaller number is: 

1450 0

  • 1
    5
    Correct
    Wrong
  • 2
    11
    Correct
    Wrong
  • 3
    3
    Correct
    Wrong
  • 4
    4
    Correct
    Wrong
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Answer : 2. "11"

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