SOLUTION: There are 17 possible questions on a test. 6 will appear on the test, two of which must be answered. How many questions must be prepared for?

Question 860443: There are 17 possible questions on a test. 6 will appear on the test, two of which must be answered. How many questions must be prepared for?
Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
Look at worst case scenario. If you prepare 12 questions (so that five are unprepared) and the teacher picks those five plus one more (worst case), then you will only have one question prepared. However if you prepare 13 questions, then worst case occurs when the teacher selects the other four questions, plus two of which you have prepared. So you should prepare at least 13 questions.
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