Question

135 = 3 x 3 x 3 x 5. And 225 = 3 x 3 x 3 x 5 x 5. So is LCM = 3 x 3 x3 x 5 x 5 = 675 and how do I find HCF.

Answer 1

ANSWER

Divide lcm by hcf then factor that and any factorization you get can be put into two numbers that when each multiplied by hcf give you a number in a pair. If b is the other no., then, b=c/a. The LCM of two numbers is 210.

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