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Get the last digit II (Posted on 2011-02-23) Difficulty: 3 of 5
Let A=1^n+2^n+3^n+...9^n

For a positive integer n what is
the last digit of A?

No Solution Yet Submitted by Ady TZIDON    
Rating: 4.0000 (2 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Solution The digit Comment 4 of 4 |

If n is divisible by 4, then it is 3. Otherwise, it is 5.


  Posted by Math Man on 2011-06-16 09:02:15
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