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HCF and LCM - Playing With Numbers

Practice calculating Highest Common Factor (HCF) and Least Common Multiple (LCM) of numbers. Includes basic calculations and complex problems combining multiple operations.

25 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

What is the result obtained when the greatest common factor of 54 and 100 is added to the 8th multiple of 42?

  1. 314
  2. 334
  3. 338
  4. 350
Question 2 Multiple Choice (Single Answer)

What is the least common multiple of 4 and 7?

  1. 14
  2. 21
  3. 24
  4. 28
Question 3 Multiple Choice (Single Answer)

What is the result obtained when greatest common factor of 80 and 90 is added to least common multiple of 5 and 11?

  1. 42
  2. 48
  3. 50
  4. 65
Question 4 Multiple Choice (Single Answer)

What is the result obtained when the least common multiple of 11 and 10 is added to the least common multiple of 12 and 10?

  1. 160
  2. 165
  3. 170
  4. 210
Question 5 Multiple Choice (Single Answer)

LCM of 4 is ______.

  1. 1
  2. 2
  3. 3
  4. Can't be determined
Question 6 Multiple Choice (Single Answer)

LCM of 15 and 9 is ______.

  1. 18
  2. 45
  3. 135
  4. 230
Question 7 Multiple Choice (Single Answer)

LCM of 2 and 6 is ____.

  1. 2
  2. 6
  3. 12
  4. 18
Question 8 Multiple Choice (Single Answer)

HCF of 24 and 16 is ______.

  1. 8
  2. 16
  3. 24
  4. 32
Question 9 Multiple Choice (Single Answer)

LCM of 1 and 2 is ______.

  1. 1
  2. 2
  3. 4
  4. 6
Question 10 Multiple Choice (Single Answer)

HCF of 56 and 40 is _____.

  1. 6
  2. 8
  3. 10
  4. 19
Question 11 Multiple Choice (Single Answer)

What is the highest common factor of 16 and 32?

  1. 2
  2. 3
  3. 4
  4. 16
Question 12 Multiple Choice (Single Answer)

LCM of 3 and 4 is ______.

  1. 3
  2. 4
  3. 12
  4. 24
Question 13 Multiple Choice (Single Answer)

What is the highest common factor of 15 and 25?

  1. 0
  2. 5
  3. 15
  4. 25
Question 14 Multiple Choice (Single Answer)

A number x is obtained when the least common multiple of 6, 18 and 27 takes away the 5th multiple of 7. How many factors does x have?

  1. 5
  2. 4
  3. 3
  4. 2
Question 15 Multiple Choice (Single Answer)

Which of the following options is the highest common factor of 21 and 56?

  1. 1
  2. 3
  3. 7
  4. 9
Question 16 Multiple Choice (Single Answer)

Which of the following numbers is the highest common factor of 27 and 90?

  1. 3
  2. 6
  3. 9
  4. 18
Question 17 Multiple Choice (Single Answer)

Highest common factor of 39 and 65 is __.

  1. 9
  2. 12
  3. 13
  4. 16
Question 18 Multiple Choice (Single Answer)

What is the HCF of 1470 and 220?

  1. 8
  2. 9
  3. 10
  4. 11
Question 19 Multiple Choice (Single Answer)

What is the highest common factor of 14 and 70?

  1. 14
  2. 16
  3. 18
  4. 20
Question 20 Multiple Choice (Single Answer)

Which of the following numbers is the highest common factor of 51 and 18?

  1. 2
  2. 3
  3. 7
  4. 9
Question 21 Multiple Choice (Single Answer)

What is the greatest common factor of 2346 and 6435?

  1. 2
  2. 3
  3. 5
  4. 9
Question 22 Multiple Choice (Single Answer)

What is the HCF of 594 and 1265?

  1. 9
  2. 11
  3. 13
  4. 15
Question 23 Multiple Choice (Single Answer)

Which of the following sets of numbers will have the highest common factor as 16?

  1. 48, 96, 145
  2. 24, 40, 64
  3. 50, 560, 140
  4. 48, 80, 112
Question 24 Multiple Choice (Single Answer)

What is the greatest common factor of 2527 and 18228?

  1. 7
  2. 9
  3. 18
  4. 27
Question 25 Multiple Choice (Single Answer)

LCM of 18 and 7 is ______.

  1. 18
  2. 104
  3. 126
  4. 128
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