214901 -1 = 214900
214900 -1 = 214899
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The set of Real numbers is infinitely dense. As a result, there are infinitely many Real numbers between any two numbers. If any number X was said to be the number before 2000, then there would be infinitely many numbers between X and 2000. Any one of these numbers has a better claim to be before 2000 than X and so X cannot be the number before 2000.
The LCM of two numbers is sometimes the product of the two numbers.
12 57
Two numbers have a GCF. Two sets of two numbers may have the same GCF.
Find the arithmetic average of the two rational numbers. It will be a rational number and will be between the two numbers.