Question

Find the LCM of the numbers by prime factorisation method
(4 & 21)​

Answer 1

Answer:

Prime Factorization of 4

Prime factors of 4 are 2. Prime factorization of 4 in exponential form is: 4 = 2^2

Prime Factorization of 21

Prime factors of 21 are 3, 7. Prime factorization of 21 in exponential form is: 21 = 3^1 × 7^1

Now multiplying the highest exponent prime factors to calculate the LCM of 4 and 21.

LCM(4,21) = 2^2 × 3^1 × 7^1

LCM(4,21) = 84

Answer 2

Answer:

Prime factors of 14=2×7

Prime factors of 21=3×7

LCM=2×3×7=42.

Step-by-step explanation:

THAT LAST ONE IS LCM: 42

HOPE THIS ANSWER HELP U

PLS MARK ME AS BRAINALIST

THANK YOU.