HCF and LCM Aptitude Questions Practice Question and Answer

Q:

Three numbers which are co-prime to one another are such that the product of the first two is 551 and that of the last two is 1073. The sum of the three numbers is: 

901 0

  • 1
    85
    Correct
    Wrong
  • 2
    89
    Correct
    Wrong
  • 3
    75
    Correct
    Wrong
  • 4
    81
    Correct
    Wrong
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Answer : 1. "85 "

Q:

The LCM of two positive integers is twice the larger number. The difference of the smaller number and the GCD of the two numbers is 4. The smaller number is: 

1547 0

  • 1
    8
    Correct
    Wrong
  • 2
    10
    Correct
    Wrong
  • 3
    12
    Correct
    Wrong
  • 4
    6
    Correct
    Wrong
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Answer : 1. " 8 "

Q:

The number of pairs of positive integers whose sum is 99 and HCF is 9 is: 

1559 0

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

Q:

A General of an Army wants to create a formation of square from 36562 army men. After arrangement, he found some army men remained unused. 

1715 0

  • 1
    81
    Correct
    Wrong
  • 2
    97
    Correct
    Wrong
  • 3
    36
    Correct
    Wrong
  • 4
    65
    Correct
    Wrong
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Answer : 1. "81"

Q:

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

1224 0

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

Q:

The greatest number that divides 411, 684, 821 and leaves 3, 4 and 5 as remainders, respectively, is 

2014 0

  • 1
    136
    Correct
    Wrong
  • 2
    204
    Correct
    Wrong
  • 3
    254
    Correct
    Wrong
  • 4
    146
    Correct
    Wrong
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Answer : 1. "136 "

Q:

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

830 0

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

Q:

Find the greatest number that will divide 390, 495 and 300 without leaving a remainder. 

1316 0

  • 1
    25
    Correct
    Wrong
  • 2
    35
    Correct
    Wrong
  • 3
    5
    Correct
    Wrong
  • 4
    15
    Correct
    Wrong
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Answer : 4. "15 "

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