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.
You have only 10 minutes to complete the test.
If you do not answer any question within the allotted time, it will be marked as incorrect.
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1 / 10

Which is not a common factor of 28 and 35?

14

1

7

5

2 / 10

The common factor between 18 and 25 is –

2

0

1

3

3 / 10

The GCF of 5/6 and 10/15 is –

5/30

5/90

1/2

1/3

4 / 10

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

5

35

25

15

5 / 10

If a bell rings every 4 minutes, another every 6 minutes, and another every 8 minutes, in how many minutes will all three bells ring together?

24 minutes

12 minutes

48 minutes

36 minutes

6 / 10

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

84

48

45

54

7 / 10

The smallest number that is divisible by 9, 12, and 18 is –

108

54

72

36

8 / 10

Find the GCF of 1/2 and 1/3.

1/2

1/3

1/6

6

9 / 10

125 mangoes and 145 bananas can be divided equally among how many boys?

12

5

15

10

10 / 10

The ratio of two numbers is 7:5, and their GCF is 9. Their LCM is –

315

525

945

630

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