perplexus.info :: Sequences : Evaluate the sum

Evaluate the sum (Posted on 2018-12-01)

252+403+574+...+4606+3640+...+...+7663+8722=S_n

Find the logic beyond the summands in the above equation
and derive the values of n and S_n .

See The Solution Submitted by Ady TZIDON

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re: Solution Good thinking, wrong answer

| Comment 2 of 5 |

(In reply to Solution by broll)

Not each! Duplicity is avoided as demonstrated by sample terms!

"each 2 digit integer

NOT EACH !!

So, Sn is NOT 248743, and n IS NOT 87

Edited on December 2, 2018, 8:49 am

Posted by Ady TZIDON on 2018-12-02 05:02:30

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