HCF(315, 195) = 15
LCM(315, 195) = 4095
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The LCM is 3150.
HCF = 3... LCM = 18 !
LCM of 42 and 315 is 630.
The HCF is always a factor of the LCM of two numbers. The HCF is a factor of both the numbers which are factors of their LCM. Thus the HCF is also a factor of the LCM of the two numbers.
5 and 10 lcm- 10 and hcf= 5