William is taking the 25-question, multiple choice American Mathematics Competition. Each question has five answer choices. Will
1 answer:
Given that <span>William guesses random answers for the last four questions and that e</span><span>ach question has five answer choices.</span><span>
The probability that he gets an answer correct </span>is 1 / 5.
The probability that he did not get an answer correct is 4 / 5.
The probability that he will not get any of the 4 questions correctly is
Therefore, the probability that he gets at least one of the 4 questions correctly is
The probability that he gets an answer correct </span>is 1 / 5.
The probability that he did not get an answer correct is 4 / 5.
The probability that he will not get any of the 4 questions correctly is
Therefore, the probability that he gets at least one of the 4 questions correctly is
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Check the picture below.
you really have two rectangles, a 6x10 and a 6x5, and surely you know what those areas are, so sum them up, and that's the area of the polygon.
you really have two rectangles, a 6x10 and a 6x5, and surely you know what those areas are, so sum them up, and that's the area of the polygon.