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 Seven come eleven (Posted on 2010-12-11)
A positive integer N fulfills the following demands:.
N is a 7 digit number.
N's digits can be arranged as seven distinct members of an arithmetic progression(either ascending or descending) .

N is a multiple of 11.

How many positive integers like N exist?
Evaluate the lowest and the highest N.
BONUS : How about 8 digits? Nine? All ten?
Rem: It is D4 for fully explained and errorless P&P result,might be significantly lower for software solution.

Comments: ( Back to comment list | You must be logged in to post comments.)
 re: 7 through 9 digits b I WAS BLOCKED??? | Comment 3 of 12 |
(In reply to mostly computer solution for 7 through 9 digits by Charlie)

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what does it mean??

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Edited on December 11, 2010, 3:27 pm

 Posted by Ady TZIDON on 2010-12-11 15:35:01

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