Somehow our Physics II lab TA thinks that we should know everything before we perform the lab, so we had a quiz right off. I had like 30 seconds to review the lab manual to study. After getting the quiz, I guessed on the first question, made up an explanation, left half of the second question blank, and had absolutely no idea on the third question. So I made up a reasonable equation and used it. To my utter surprise, it was right! So I got a 28 out of 30!