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Palindromic sum (Posted on 2017-08-08) Difficulty: 3 of 5
Express 314159265358979323846 as a sum of positive palindromes, the idea being to use as few summands as you can.

No Solution Yet Submitted by Danish Ahmed Khan    
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Solution Solution using only two palindromes | Comment 2 of 3 |
266028752636257820662
+48130512722721503184
---------------------
314159265358979323846
To find this solution I thought of how I could generate one digit at a time like in the solution for "Move the 2 - double the number".  I assumed that one palindrome would have the same number of digits as the sum and the second number would have one less digit.  Then I started at the outside and worked my way to the center.  Sometimes a carry would throw things off and I had to backtrack a couple of steps to make the sum work.


  Posted by Brian Smith on 2017-08-09 23:22:50
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