Question

find hcf and lcm of 420 and 81. verify that hcf x lcm= product of Number​

Answer 1

Answer:

Step-by-step explanation:

when we factorize both, we get

420 = 2 x 2 x 3 x 5 x 7

81 = 3 x 3 x 3 x 3

we see that the common factor is only 3, therefore the hcf is also 3.

now for LCM, we see that

the multiplication - 2x2x3x3x3x3x5x7 has all the factors of both numbers, that is each number can be found using suitable numbers from this expression therefore their product is the LCM which is = 11340

we also see that

11340 x 3 = 420 x 81

34020 = 34020

HENCE VERIFIED.

Hope this helps

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