HCF and LCM

IMPORTANT

HCF and LCM: Overview

This topic covers concepts, such as, LCM using Prime Factorisation Method, HCF using Prime Factorisation Method, Relation between LCM and HCF of Two Numbers, HCF of Three Positive Integers & LCM of Three Positive Integers etc.

Important Questions on HCF and LCM

HARD
IMPORTANT

Find the LCM and HCF by prime factorisation method for the numbers 15, 18, 36 and 20.

HARD
IMPORTANT

Find the LCM and HCF by prime factorisation method for the numbers 15, 25 and 30.

HARD
IMPORTANT

Find the LCM and HCF by prime factorisation method for the numbers 10, 15 and 25.

HARD
IMPORTANT

Find the LCM and HCF by prime factorisation method for the numbers 18, 42 and 48.

MEDIUM
IMPORTANT

Find LCM of the following using prime factorisation.

24, 36

MEDIUM
IMPORTANT

Find LCM of the following using prime factorisation.

32, 40

MEDIUM
IMPORTANT

Find LCM of the following using prime factorisation.

40, 44 and 48

MEDIUM
IMPORTANT

Find LCM of the following using prime factorisation.

15, 30 and 45

MEDIUM
IMPORTANT

Find LCM of the following.

24, 36 and 40

MEDIUM
IMPORTANT

Find LCM of the following.

15, 18 and 27

MEDIUM
IMPORTANT

Find LCM of the following.

6, 12 and 24

MEDIUM
IMPORTANT

Find LCM of the following.

4, 8 and 12

MEDIUM
IMPORTANT

Find LCM of the following.

6, 24

MEDIUM
IMPORTANT

Find LCM of the following.

25, 50

MEDIUM
IMPORTANT

Find LCM of the following.

6, 18

MEDIUM
IMPORTANT

Find LCM of the following.

5, 10

MEDIUM
IMPORTANT

If the product of two numbers is 12960 and HCF is 18 then find their LCM.

EASY
IMPORTANT

Find the HCF of 14 and 21.

EASY
IMPORTANT

If the product of two numbers is 525 and their H.C.F. is 5, then find their L.C.M.

MEDIUM
IMPORTANT

Find the LCM by using prime factorization method:

84,93,105