Re: Chewing gum for the 50g Message #3 Posted by Glenn Shields on 20 July 2010, 9:33 a.m., in response to message #2 by Han
Thanks for your swift and sure response. I didn't know what I had stepped into, but it's amazing what a great resource these forum members can be (plus Wikipedia) - who needs school! I also noted which lists are invariant, like numbers in their "proper" positions
or pairs in "each other's" position, such as {6,7,4,3,5,1,2,8,10,9}.
Cheers, Glenn
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