3 Mar
2015
3 Mar
'15
1:19 p.m.
Exactly -- nice solving! (This is one reason 24 is my favorite number.) --Dan
On Mar 3, 2015, at 12:17 PM, Mike Stay <metaweta@gmail.com> wrote:
On Tue, Mar 3, 2015 at 11:52 AM, Dan Asimov <dasimov@earthlink.net> wrote:
PUZZLE: Find the n for which the invertible elements of Z/nZ are all square roots of unity.
The factors of 24 (such a cool number!). The factor 1 works because 0=1 in the trivial ring.