perplexus.info :: Just Math : Palindromes and Divisibility

Palindromes and Divisibility (Posted on 2015-10-16)

How many positive palindromes less than 20150 are divisible by 7?

See The Solution Submitted by K Sengupta

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re: analytic solution

Comment 3 of 3 |

(In reply to analytic solution by Paul)

Looks like I forgot to filter out the 6-digit numbers. Oh my.

Subtracting the 20 6-digit numbers leaves 47 such integers.

You're missing 707.

Posted by Charlie on 2015-10-16 14:16:53

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