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The math test has 10 multiple choice questions, each with 3 answers. If Betty guesses correctly on the first 3 questions, what is the probability that she will guess correctly on the fourth question?

User Misha M
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2 Answers

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I would say that Betty will have a probability to guess 1/3 on the fourth question due to the test only having 10 multiple choice questions with three answers. 
User Reaz Patwary
by
8.4k points
3 votes

Answer:
(1)/(3)

Explanation:

Given: The number of multiple choices to each question = 3

We know that in multiple choice question there is only one answer is correct .

Then the probability that she will guess correctly on any question is given by :-


=\frac{\text{Correct choice}}{\text{Total choices}}\\\\=(1)/(3)

Hence, the the probability that she will guess correctly on the fourth question =
(1)/(3)

User Anytoe
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