All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info

Home > Just Math
Sum Power Digit Determination (Posted on 2014-07-12) Difficulty: 3 of 5
Determine the last digit of:

12 + 23 + 34 + 45 + .......+ 20142015

No Solution Yet Submitted by K Sengupta    
No Rating

Comments: ( Back to comment list | You must be logged in to post comments.)
re: Shortcut solution erratum Comment 4 of 4 |
(In reply to Shortcut solution by Jer)

Your one-before-last sentence is WRONG , both grammatically (above,are,are,) and mathematically (15 terms  instead of 14, first zero redundant).

Please edit,

Both the method and the result are ok.

  Posted by Ady TZIDON on 2014-07-13 10:20:08
Please log in:
Remember me:
Sign up! | Forgot password

Search body:
Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (5)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Copyright © 2002 - 2018 by Animus Pactum Consulting. All rights reserved. Privacy Information