Math, asked by bandnaranabandu, 7 months ago

Show that 9^n can never ends with unit digit 0.

Answers

Answered by het7776shah

3

Step-by-step explanation:

Let n=1,2,3,4,5....

9¹ =9

9² =81

9³=729....

So the unit digit oscillates between 1,9

There is no chance of other value to get into units digit of 9n

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