Question

please help me to solve this 5 question ​

Answer 1

Question:

Find the HCF and LCM of 6 , 72 and 120 by prime factorisation method.

Answer:

LCM = 1440

HCF = 6

Step-by-step explanation:

Factors of:

6 = 2 ×3

72 = 2 × 2 × 2 × 3 × 3

120 = 2 × 2 × 2 × 3 × 5

HCF is the common factor of all

= 2 × 3

= 6

LCM is the lowest common multiple

= 2 × 3 × 2 × 2 × 2 × 2 × 3 × 5

= 1440

So,

LCM = 1440

HCF = 6