HCF and LCM Problems – Aptitude Test Questions with Answers

HCF and LCM

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This aptitude test has 10 MCQs on HCF and LCM.
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1 / 10

The GCF of 5/6 and 10/15 is –

5/90

1/2

5/30

1/3

2 / 10

Highest Common Factor (HCF) is also known as –

Great Common Factor (GCF)

Greatest Common Divisor (GCD)

Least Common Divisor (LCD)

Least Common Multiple (LCM)

3 / 10

What are the common factors of 24 and 36?

1, 2, 3, 4, 8, 12

1, 2, 3, 4, 6, 12

1, 2, 3, 5, 8, 12

1, 2, 3, 5, 6, 12

4 / 10

If the product of two numbers is 900 and their GCD is 15, find the LCM.

100

45

75

60

5 / 10

The LCM of two consecutive numbers is always –

Their product

Their sum

1

Greater than their product

6 / 10

What is the least number of 4 digits which is divisible by 12, 15, 20, and 35?

1620

1560

1120

1260

7 / 10

Two numbers have an HCF of 1. What can you say about the numbers?

They are co-prime

They are multiples

They are prime

They are equal

8 / 10

Which number is the HCF of 45, 75, and 105?

15

5

35

25

9 / 10

The ratio of two numbers is 3:4, and their HCF is 4. Their LCM is

54

45

48

84

10 / 10

What is the greatest number which divides 57, 98, and 143 with no remainder?

1

3

2

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