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

 Palindromic sum (Posted on 2017-08-08)
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 No Rating

Comments: ( Back to comment list | You must be logged in to post comments.)
 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

 Search: Search body:
Forums (0)