West Bengal Police Constable Special Mock Test

Mathematics - HCF & LCM

1 / 10

1) The HCF of three numbers is 23. If they
are in the ratio of l:2:3 then find the
numbers.

A) None of these

B) 23, 21, 35

C) 69, 15, 22

D) 25, 31, 41

E) 23, 46, 69

2 / 10

2) The HCF and LCM of two numbers are
13 and 1989, respectively. If one of the
numbers is 117, then determine the
another.

A) 131

B) 121

C) 221

D) 231

3 / 10

3) If HCF of two numbers is 8, then which
of the following can never be their LCM?

A) 56

B) 24

C) 60

D) 48

E) None of these

4 / 10

4) Three numbers are in the ratio of 3:4:5
and their LCM is 1200. Find the HCF of
the numbers.

A) 40

B) None of these

C) 30

D) 20

E) 80

5 / 10

5) The HCF and LCM of two natural
numbers are 12 and 72, respectively.
What is the difference between the two
numbers, if one of the number is 24?

A) 21

B) 12

C) 18

D) 24

6 / 10

6) The HCF of two 2-digit numbers is 19 and their sum is 152. What is their difference?

A) 57

B) 19

C) 76

D) 38

7 / 10

7) There are two numbers p and q such
that their HCF is 1. Which of the
following statements are correct?
I. Both p and q may be prime.
II. One number may be prime and the
other composite.
III. Both the numbers may be comp0Bite. Select the correct answer using the code
given below.

A) I and II

B) I, II and III

C) I and III

D) II and III

8 / 10

8) What will be the HCF of (2× 3×7×9), (2 ×3 × 9× 11) and (2 x 3× 4× 5)?

A) 2 x3x 9

B) 2 x 3 x7

C) 2 x 3

D) 2 x 7x 9x11

9 / 10

9) If the LCM of two numbers is 180 and their product is 1620, what is their HCF?

A) 18

B) 54

C) 9

D) 36

10 / 10

10) The product of two whole numbers is
1500 and their HCF is 10. Pind the LCM.

A) 150

B) None of these

C) 1500

D) 15000

E) 15

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Curriculum

Mathematics (HCF & LCM গ.সা.গু এবং ল.সা.গু)

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