HCF and LCM Practice Question and Answer

Q:

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

1115 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:

The maximum number of students among whom 1001 pens and 910 pencils can be distributed in such a way that each student gets same number of pens and same number of pencils, is: 

1470 0

  • 1
    91
    Correct
    Wrong
  • 2
    910
    Correct
    Wrong
  • 3
    1001
    Correct
    Wrong
  • 4
    1911
    Correct
    Wrong
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Answer : 1. "91 "

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 

1268 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:

Two numbers are in the ratio 3 : 4. Their LCM is 84 . The greater number is: 

989 0

  • 1
    21
    Correct
    Wrong
  • 2
    24
    Correct
    Wrong
  • 3
    28
    Correct
    Wrong
  • 4
    84
    Correct
    Wrong
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Answer : 3. "28"

Q:

A number of friends decided to go on picnic and planned to spend Rs. 108 on eatables. Three of them however did not turn up. As a consequence, each one of the remaining had to contribute Rs 3. extra. The number of them who attended the picnic was:

2716 0

  • 1
    15
    Correct
    Wrong
  • 2
    12
    Correct
    Wrong
  • 3
    9
    Correct
    Wrong
  • 4
    6
    Correct
    Wrong
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Answer : 3. " 9"

Q:

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

1092 0

  • 1
    36
    Correct
    Wrong
  • 2
    48
    Correct
    Wrong
  • 3
    72
    Correct
    Wrong
  • 4
    96
    Correct
    Wrong
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Answer : 2. "48"

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Answer : 2. "6"

Q:

The sum of two numbers is 84 and their HCF is 12. Total number of such pairs of number is 

1823 0

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

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