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HCF and LCM Questions and Answers for Practice

2 years ago 8.2K Views
Q :  

The product of two numbers is 20736 and their HCF is 54. Find their LCM.

(A) 685

(B) 468

(C) 648

(D) 384

Correct Answer : D

Q :  

What is the LCM (least common multiple) of 57 and   93?

(A) 1576

(B) 1767

(C) 1567

(D) 1919

Correct Answer : B

Q :  

The LCM of two numbers is 495 and their HCF is 5. If the sum of the numbers is 100, then their difference is-

(A) 10

(B) 46

(C) 70

(D) 90

Correct Answer : A

Q :  

The HCF and LCM of two numbers are 3 and 2730 respectively. If one of the numbers is 78, find the other number.

(A) 107

(B) 103

(C) 105

(D) 102

Correct Answer : C

Q :  

a and b are two whole numbers and c is their HCF, then the LCM of those two numbers is

(A) ab/c

(B) abc

(C) bc

(D) ac/b

Correct Answer : A

Q :  

The HCF of two numbers is 4 and the two other factors of LCM are 5 and 7. Find the smaller of the two numbers.

(A) 10

(B) 14

(C) 20

(D) 28

Correct Answer : C

Q :  

What is the Highest Factor of ?

(A)

(B)

(C)

(D)

Correct Answer : B

Q :  

The HCF of 156, 312 and 195 is :

(A) 39

(B) 3

(C) 78

(D) 13

Correct Answer : A

Q :  

The sum of two numbers is 232 and their HCF is 29. What is the numbers of such pairs of numbers satisfied the above condition?

(A) 0

(B) 2

(C) 3

(D) 1

Correct Answer : B

Q :  

The product of two numbers is 2028 and their HCF is 13. The number of such pair is-

(A) 1

(B) 2

(C) 3

(D) 4

Correct Answer : B

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