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a^2 + b^2 = c^2

Didn't realize that, but it kicked back in once I saw your explanation. Not taking math classes for four years will do that to me. Meh. I didn't do too well in geometry (proofs :angry:) and calculus (limits were the bane of my existence), but I was great with algebra.

Got 20/20, but used a calculator on some. #11 took me forever to figure out, and my method of eventually getting it right was different than theirs. Here's how they got it and how I got it. The question was "What is next in this sequence? 2, 3, 8, 63..." Their answer was 3968, and you get the...