HCF and LCM Practice Question and Answer

Q:

The  LCM of two numbers is 45 times their HCF. If one of the numbers is 125 and sum of HCF and LCM is 1150. The other numbers is-

1509 0

  • 1
    225
    Correct
    Wrong
  • 2
    235
    Correct
    Wrong
  • 3
    240
    Correct
    Wrong
  • 4
    250
    Correct
    Wrong
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Answer : 1. "225"

Q:

The LCM of x2 − 8x + 15 and x− 5x + 6 is: 

1507 0

  • 1
    (x - 2) (x - 3) (x − 5)
    Correct
    Wrong
  • 2
    (x − 6)2 (x + 1) (x − 3) 
    Correct
    Wrong
  • 3
    (x − 6) (x + 1) (x − 3)
    Correct
    Wrong
  • 4
    (x + 6) (x + 1) (x − 3)
    Correct
    Wrong
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Answer : 1. " (x - 2) (x - 3) (x − 5) "

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 the ratio of two numbers is 13 : 15 and their L.C.M. is 39780. Then the numbers are?

1458 0

  • 1
    2550 and 3450
    Correct
    Wrong
  • 2
    2652 and 3060
    Correct
    Wrong
  • 3
    2250 and 2340
    Correct
    Wrong
  • 4
    2450 and 3450
    Correct
    Wrong
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Answer : 2. "2652 and 3060"

Q:

The product of the two numbers is 1500 and their HCF is 10. The number of such possible pairs is/are: 

1406 0

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

Q:

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

1372 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?

1352 0

  • 1
    0
    Correct
    Wrong
  • 2
    2
    Correct
    Wrong
  • 3
    3
    Correct
    Wrong
  • 4
    1
    Correct
    Wrong
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Answer : 2. "2"

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