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saul85 [17]
3 years ago
14

N is a positive integer explain why n(n-1) must be an even number

Mathematics
1 answer:
kolezko [41]3 years ago
3 0

Answer:

if 'n' is positive and odd then reducing it by one gives you an even; so then you are multiplying and even and an odd which results in an even

if 'n' is positive and even then reducing it by one gives you an odd; so then you are multiplying and even and an odd which results in an even

Step-by-step explanation:

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