12! Pretty impressive, given my nonverbal learning disability. When I took a chemistry course in college I got really good at talking myself through analyzing 2D representations of 3D objects though, so I'm able to verbalize them and approach them in a logical, sequential way that fits my learning style better. Still, pretty pleased with myself. I ran out of time on all sections but the last though.
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Not all those who wander are lost... but I generally am.