Math, asked by brightedu7340, 1 year ago

What will be the unit digit of 1 + 9 + 9^2 + 9^9.............+ 9^2006?

Answers

Answered by stuffin
3

The unit digit of nth power of 9 is 9 if n is any odd whole number while it is 1 if n is any even whole number.

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