If n is any natural number, prove that  is divisible by 8.
?
List the steps involved.

What will be an ideal response?


Step 1: We must verify that the statement is true for . However, equals , which is divisible by 8.

Step 2: Assuming that the statement is true for , we must prove that it is true for . Let's suggest that the statement is true for and examine it for .

.

is obtained by substituting k+1 for n in .

.

So if is divisible by 8, is also divisible by 8 because 8 is divisible by 8.


Mathematics

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