MATH Prob.
posted by Twg .
Jack is taking a fouritem true–false test. He has no
knowledge about the subject of the test and decides to
flip a coin to answer the items. What is the probability
that he receives a perfect score? What is the probability
on a 10item test?

The probability of getting the correct answer is 1/2
The probability of getting 4 correct in a row, to make a perfect on a 4 question test, can be found by (1/2)^4, or 1/16.
What do you think the probability of getting a perfect on a 10item test? 
(1/2)^10= 1/1024?
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