n^2+n = odd Factor n^2+n: n(n + 1) We have one of two scenarios: If n is odd, then n + 1 is even. The product of an odd and even number is an...
n^2-n = even Factor n^2-n: n(n - 1) We have one of two scenarios: If n is odd, then n - 1 is even. The product of an odd and even number is an...
Set of 2 digit even numbers less than 40 Knowns and givens: 2 digit numbers start at 10 Less than 40 means we do not include 40 Even numbers are...
Two digit Numbers less than 56: {10, 11, 12, ..., 55} Two Digit Even Numbers of that Set: {10, 12, 14, ..., 54} Two Digit Even numbers Divisible...
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