SOLUTION: In how many different ways can a 10-question true-false test be answered if it is all right to leave questions unanswered?
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Question 402353: In how many different ways can a 10-question true-false test be answered if it is all right to leave questions unanswered?
Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
For each question, you can either answer it true, answer false, or leave it blank. This is 3 ways for each of 10 questions, so the total number of ways is .
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