Test 3
======

Covers NP-completeness (I-V) and Computability (I-III)
3 questions
2 questions on NP-completeness and 1 question on computability
one of the NP-completeness questions is in the style of Q3 in PS3 (but
of course shorter).  The question on computability is worth 50% of the
test, and it has 3 parts, so in terms of content it is half of the
test.