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If n is a natural number then 4^n-3^n ends with a digit x .the no.of possible values of x is

If n is a natural number then 4^n-3^n ends with a digit x .the no.of possible values of x is

Grade:8

1 Answers

Deepak Kumar Shringi
askIITians Faculty 4407 Points
4 years ago
n can be either odd or even now let if n is odd then x can be 1,7
when n is even x can be 7,5
so
1,7,5

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