Question

explain why 2n+1 must be an odd number

Answer 1

The answer only shows it is for n 1, 2, 3. Answer 2 is a . It shows whatever number you start with (n could stand for any whole number), 2n 1 will always be an odd number. This example shows that there is a huge difference between verifying a result (simply checking with numbers) and proving a result

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