Question

find the HCF and LCM of : 456,836​

Answer 1

Answer:

1. Decompose all numbers into prime factors

456 2 228 2 114 2 57 3 19 19 1 836 2 418 2 209 11 19 19 1

2. Write all numbers as the product of its prime factors

Prime factors of 456 = 23 . 3 . 19

Prime factors of 836 = 22 . 11 . 19

3. Choose the common and uncommon prime factors with the greatest exponent

Common prime factors: 2 , 19

Common prime factors with the greatest exponent: 23, 191

Uncommon prime factors: 3 , 11

Uncommon prime factors with the greatest exponent: 31, 111

4. Calculate the Least Common Multiple or LCM

Remember, to find the LCM of several numbers you must multiply the common and uncommon prime factors with the greatest exponent of those numbers.

LCM = 23. 191. 31. 111 = 5016

Answer 2

Step-by-step explanation:

fristly you take LCM AND THEN HCF IN LCM YOU HAVE TO MULTIPLY SAME THINGS AND IN HCF ALL