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sarah10
To get an A grade on the test, you need a total score of more than 16 points. One of the students knows the correct answer to 6 of the 20 questions. The rest she guesses at random by tossing a coin (one toss per question, as in 4B). What is the chance that she gets an A grade on the test?
@Nurali can you help me in this question please ....
i cant realize its meaning <one toss per question, as in 4B> ? please explain