Question

Find HCF and LCM of 630 and 81.​

Answer 1

Step-by-step explanation:

hcf =9

lcm = 9×9×7×10

=5670

Answer 2

$\large\bold{ \underline{ \underline{ \: \: Answer \: }}}$

$\to$ HCF ( Highest common factor ) = 9

$\to$ LCM ( Least common factor ) = 5670

$\large\bold{ \underline{ \underline{ \: \: Explanation \:\: }}}$

Prime Factorisation of 630 and 81 :

$\to$ 630 = 2 × 3 × 3 × 5 × 7

$\to$ 81 = 3 × 3 × 3 × 3

$\to$ HCF of 630 and 81 = 3 × 3 = 9

$\to$ LCM = of 630 and 81 = 2 × 3 × 3 × 5 × 7 × 3 × 3 = 5670