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

 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.

 See The Solution Submitted by Ady TZIDON Rating: 4.0000 (3 votes)

Comments: ( You must be logged in to post comments.)
 Subject Author Date Answer for 7 digits Math Man 2011-01-03 18:40:37 re: to be hoped comments will not get wiped out Ady TZIDON 2010-12-11 17:16:43 to be hoped comments will not get wiped out Charlie 2010-12-11 17:07:17 7 thru 9 again Charlie 2010-12-11 17:06:09 re(3): for 10 digits ?????? remark Ady TZIDON 2010-12-11 16:45:36 re(3): 7 through 9 digits b I WAS BLOCKED??? Ady TZIDON 2010-12-11 16:26:29 re(2): for 10 digits ?????? Charlie 2010-12-11 15:51:35 re(2): 7 through 9 digits b I WAS BLOCKED??? Charlie 2010-12-11 15:43:13 re: for 10 digits ?????? Ady TZIDON 2010-12-11 15:39:58 re: 7 through 9 digits b I WAS BLOCKED??? Ady TZIDON 2010-12-11 15:35:01 for 10 digits Charlie 2010-12-11 15:28:45 mostly computer solution for 7 through 9 digits Charlie 2010-12-11 14:17:39

 Search: Search body:
Forums (0)