Home > General
Nonarithmetic Triplets (Posted on 20130408) 

Find nine different integers from 1 to 20 inclusive such that no combination of any three of the nine integers form an arithmetic sequence.
(For example, if two of the integers chosen were 7 and 13, then that would preclude 1, 10 and 19 from being included.)
Comments: (
You must be logged in to post comments.)

Subject 
Author 
Date 
 re(2): Counting Up  Bryan  20130409 10:37:33 
 re(5): Counting Up,,,,Why not up and down?  Ady TZIDON  20130409 09:35:44 
 re(4): Counting Up,,,,Why not up and down?  Charlie  20130409 01:52:20 
 re(3): Counting Up,,,,Why not up and down?  Ady TZIDON  20130409 01:20:20 
 re(3): Counting Up  Jer  20130409 00:46:52 
 re(2): Counting Up  Charlie  20130408 19:56:32 
 computer solutionincludes the symmetric opposite  Charlie  20130408 16:03:25 
 re: Counting Up  Jer  20130408 16:01:02 
 Counting Up  Bryan  20130408 14:53:28 


Please log in:
Forums (0)
Newest Problems
Random Problem
FAQ 
About This Site
Site Statistics
New Comments (3)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On
Chatterbox:
