Question

5. Caw two numbers have 13 as their HCF and 1989 as their LCM? Give reason.​

Answer 1

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Answer:

if 1989 is divided by each of the multiples of 13 individually, the resulting answers are not a multiple of 13. So, NO, there is such possibility of having two numbers which have 13 as their HCF and 1989 as LCM.

Step-by-step explanation:

The factors of 1989 are - 1,3,9,13,17,39,51,117,153,221,663,1989,

Out of which, the multiples of 13 are - 13, 39, 117, 221, 663

if 1989 is divided by each of the multiples of 13 individually, the resulting answers are not a multiple of 13.

So, NO, there is such possibility of having two numbers which have 13 as their HCF and 1989 as LCM.

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Answer 2

Answer:

Did you mean: 5. Cow two numbers have 13 as their HCF and 1989 as their LCM? Give reason

Step-by-step explanation:

=1989/13

=153(as a quotient) so two number can have the HCF as 13 and LCM of 1989