Question

Lcm of two numbers is 72 which of the following is not hcf 8,9,6,7

Answer 1

Answer:

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Step-by-step explanation:

Here ,LCM=72

AND IT IS ASKED TO FIND OUT WHICH ONE OF THE FOLLOWING IF NOT ITS HCF.

SOLUTION: YOU SHOULD ALWAYS REMEMBER THAT HCF IS ALWAYS A FACTOR OF LCM i.e.IT IS COMPLETELY DIVISIBLE BY LCM .

NOW , 8 ,9 AND 6 COMPLETELY DIVIDES 72 AT 9,8 AND 12 RESPECTIVELY .

BUT 7 DOES NOT COMPLETELY DIVIDE 72

HENCE 7 IS NOT TEH HCF OF 72

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