Question
The LCM of two numbers is 63 and their HCF is 7. How
many such pairs of numbers are possible?Solution
Let the two numbers be '7a' and '7b'. So, 7a X 7b = 63 X 7 Or, ab = 9 So, possible values of 'a' and 'b' = (9, 1) {(3, 3) is another possibility but since they are not co-primes, we may disregard that case}.
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