SOLUTION: Suppose there are 10 items on a true-false test. The person taking the test does not read the questions; he just answers each question randomly. What is the probability of his gues

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Question 176173: Suppose there are 10 items on a true-false test. The person taking the test does not read the questions; he just answers each question randomly. What is the probability of his guessing ALL answers correctly?
I have to come up with a formula type answer for this, but know that he has a 50/50 chance of answering the questions correctly or at least a 1% chance.
Heeelllp!
TIA
Answer by Mathtut(3670) About Me  (Show Source):