Question

find the HCF of the following by prime factorization method .18,24,42.​

Answer 1

Answer:

to solve it by the use of prime number if u know the prime number then u easly solve it by that hint

Answer 2

Answer :-

we know that,

HCF = product of the greatest power of each prime factor, involved in the numbers

here,

• 18 = 2 × 3 × 3 = 2 × 3²
• 24 = 2 × 2 × 2 × 3 = 2³ × 3
• 42 = 2 × 3 × 7

so, LCM = 3² × 2³ × 7

$\bold{ : \implies LCM(18,24,42) = 504}$

so, LCM of 18, 24 and 42 is 504