Letter: Christmas P's

Published 9 February 2011

From Susie Schofield

I looked into the “P versus NP problem” on Christmas Day (25 December 2010, p 24), and am happy to confirm that Presents (P) most definitely do not equal No Presents (NP). I claim my $1 million prize.

Dundee, UK

Issue no. 2799 published 12 February 2011

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