# LCM and HCF MCQs with Answers

LCM and HCF MCQs are very important test and often asked by various testing services and competitive exams around the world. Here you will find all the Important LCM and HCF MCQs for Preparation.

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What is the LCM of 12 and 18?
a) 6
b) 24
c) 36
d) 72

What is the HCF of 24 and 36?
a) 2
b) 4
c) 6
d) 12

What is the LCM of 15 and 20?
a) 30
b) 60
c) 75
d) 100

What is the HCF of 36 and 48?
a) 4
b) 6
c) 12
d) 18

What is the LCM of 8 and 10?
a) 4
b) 10
c) 16
d) 40

What is the HCF of 42 and 56?
a) 4
b) 6
c) 8
d) 14

Find the LCM of 5, 8, and 10.
a) 20
b) 30
c) 40
d) 50

Find the HCF of 24, 36, and 48.
a) 6
b) 8
c) 12
d) 24

What is the LCM of 9, 12, and 15?
a) 36
b) 45
c) 60
d) 90

What is the HCF of 16, 24, and 32?
a) 2
b) 4
c) 8
d) 16

Find the LCM of 7, 14, and 21.
a) 14
b) 21
c) 42
d) 49

Find the HCF of 18, 27, and 36.
a) 3
b) 6
c) 9
d) 18

Determine the LCM of 4, 5, and 6.
a) 12
b) 18
c) 20
d) 24

Determine the HCF of 42, 56, and 70.
a) 7
b) 14
c) 21
d) 28

Find the LCM of 9, 15, and 20.
a) 45
b) 60
c) 90
d) 180

Find the HCF of 54, 72, and 90.
a) 6
b) 9
c) 18
d) 27

Find the LCM of 3, 5, and 7.
a) 15
b) 21
c) 35
d) 105

Find the HCF of 42, 63, and 84.
a) 7
b) 14
c) 21
d) 42

Determine the LCM of 8, 12, and 18.
a) 36
b) 48
c) 72
d) 144

Determine the HCF of 24, 32, and 40.
a) 4
b) 8
c) 16
d) 24

Find the LCM of 6, 8, and 12.
a) 12
b) 16
c) 24
d) 48

Find the HCF of 36, 48, and 60.
a) 6
b) 12
c) 18
d) 36

Determine the LCM of 9, 12, and 15.
a) 36
b) 45
c) 60
d) 90

Determine the HCF of 42, 56, and 70.
a) 7
b) 14
c) 21
d) 28

Find the LCM of 10, 12, and 15.
a) 30
b) 60
c) 120
d) 180

Find the HCF of 54, 72, and 90.
a) 6
b) 9
c) 18
d) 27

Find the LCM of 2, 3, and 4.
a) 4
b) 6
c) 8
d) 12

Find the HCF of 16, 24, and 32.
a) 2
b) 4
c) 8
d) 16

Determine the LCM of 7, 8, and 9.
a) 56
b) 63
c) 72
d) 81

Determine the HCF of 20, 30, and 40.
a) 2
b) 4
c) 10
d) 20

Find the LCM of 5, 6, and 7.
a) 15
b) 30
c) 35
d) 42

Find the HCF of 42, 63, and 84.
a) 7
b) 14
c) 21
d) 42

Determine the LCM of 8, 10, and 12.
a) 24
b) 40
c) 60
d) 80

Determine the HCF of 36, 48, and 60.
a) 6
b) 12
c) 18
d) 24

Find the LCM of 3, 4, and 5.
a) 12
b) 15
c) 20
d) 30

Find the HCF of 9, 12, and 15.
a) 3
b) 6
c) 9
d) 12

Find the LCM of 6, 9, and 12.
a) 18
b) 24
c) 36
d) 48

Find the HCF of 20, 25, and 30.
a) 5
b) 10
c) 15
d) 20

Determine the LCM of 15, 20, and 25.
a) 75
b) 100
c) 125
d) 150

Determine the HCF of 35, 45, and 55.
a) 5
b) 10
c) 15
d) 20

Find the LCM of 7, 14, and 21.
a) 14
b) 21
c) 42
d) 49

Find the HCF of 28, 35, and 42.
a) 7
b) 14
c) 21
d) 28

Determine the LCM of 9, 12, and 18.
a) 36
b) 54
c) 72
d) 108

Determine the HCF of 24, 36, and 48.
a) 6
b) 12
c) 18
d) 24

Find the LCM of 4, 5, and 6.
a) 12
b) 20
c) 24
d) 30

Find the HCF of 42, 56, and 70.
a) 7
b) 14
c) 21
d) 28

Find the LCM of 8, 10, and 12.
a) 16
b) 24
c) 30
d) 48

Find the HCF of 18, 24, and 30.
a) 2
b) 3
c) 6
d) 12

Determine the LCM of 14, 21, and 28.
a) 42
b) 56
c) 84
d) 98