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2015-06-22T09:57:58+05:30

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1 and 9. Unit digit will be 1 and 9 only. 
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if n is even then the unit digit will be 1 and if n is odd then it will be 9
thanks a lot
thank a lot
2015-06-22T12:05:29+05:30

This Is a Certified Answer

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
There are only two possibilities ie 1 and 9. This answer can be found by carefully observing the powers of 9
 1 9 81 729 ....
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