45 and 54
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2 numbers have a gcf of 3 = 3 & 6, 6 &9,...
Because prime numbers don't have any common prime factors. Their GCF is 1. Since the product of the GCF and LCM of a pair of numbers equals the product of the numbers, the LCM has to be equal to the product.
99.Because if you do 0 minus 99 whats the answer?99.So it has 99 numbers in a 2-digit number.
the gcf is 2 or 11
6and7 dombnut