Question

find lcm, hcf using prime factorisation of 144, 720,192​

Answer 1

Answer:

Using prime factors to find the HCF and LCM

Numbers can be broken down into prime factors using prime factor trees. ...

Find the HCF and LCM of 24 and 180.

Cross any numbers used so far off from the products.

To find the LCM, multiply the HCF by all the numbers in the products that have not yet been used.

Highest common factors

Answer 2

Answer:

Step-by-step explanation:

Prime factorization: 144 = 24 × 32  198 = 2 × 32 × 11  HCF = product of smallest power of each common prime factor in the numbers = 2 × 32 = 18  LCM = product of greatest power of each prime factor involved in the numbers = 24 × 32 × 11 = 1584