HCF and LCM Practice Question and Answer

Q:

The HCF of three numbers 98, 175 and 210 will be:

485 0

  • 1
    6
    Correct
    Wrong
  • 2
    5
    Correct
    Wrong
  • 3
    7
    Correct
    Wrong
  • 4
    3
    Correct
    Wrong
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Answer : 3. "7"

Q:

The LCM of two numbers is 48. If those numbers are in the ratio 2 : 3 then what will be their sum?

479 0

  • 1
    28
    Correct
    Wrong
  • 2
    32
    Correct
    Wrong
  • 3
    40
    Correct
    Wrong
  • 4
    64
    Correct
    Wrong
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Answer : 3. "40"

Q:

The LCM of four consecutive numbers is 60 The sum of the first two numbers is equal to the fourth number. What is the sum of four numbers? 

478 0

  • 1
    17
    Correct
    Wrong
  • 2
    14
    Correct
    Wrong
  • 3
    21
    Correct
    Wrong
  • 4
    24
    Correct
    Wrong
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Answer : 2. "14"

Q:

A number between 1000 and 2000 which when divided by 30, 36 and 80 gives a remainder 11 in each case is:

472 0

  • 1
    11523
    Correct
    Wrong
  • 2
    1451
    Correct
    Wrong
  • 3
    1641
    Correct
    Wrong
  • 4
    1712
    Correct
    Wrong
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Answer : 2. "1451"

Q:

The LCM of 1.2 and 2.7 is:

470 0

  • 1
    5.4
    Correct
    Wrong
  • 2
    10.8
    Correct
    Wrong
  • 3
    1.08
    Correct
    Wrong
  • 4
    32.4
    Correct
    Wrong
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Answer : 2. "10.8"

Q:

The HCF and the LCM of two numbers are 5 and 120, respectively. If the sum of the two numbers is 55, then the sum of the reciprocals of these two numbers is equal to:

468 0

  • 1
    $${{55}\over{601}}$$
    Correct
    Wrong
  • 2
    $${{11}\over{120}}$$
    Correct
    Wrong
  • 3
    $${{120}\over{11}}$$
    Correct
    Wrong
  • 4
    $${{601}\over{55}}$$
    Correct
    Wrong
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Answer : 2. "$${{11}\over{120}}$$"

Q:

The number between 4000 and 5000 that is divisible by each of 12, 18, 21 and 32 is 

465 0

  • 1
    4203
    Correct
    Wrong
  • 2
    4023
    Correct
    Wrong
  • 3
    4032
    Correct
    Wrong
  • 4
    4302
    Correct
    Wrong
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Answer : 3. " 4032"

Q:

The L.C.M. of two numbers is 1820 and their H.C.F. is 26. If one number is 130 then the other number is:

464 0

  • 1
    70
    Correct
    Wrong
  • 2
    1690
    Correct
    Wrong
  • 3
    364
    Correct
    Wrong
  • 4
    1264
    Correct
    Wrong
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Answer : 3. "364 "

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