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    Calculating the Probability

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    An instructor has a test bank consisting of 300 easy true-false questions, 200 difficult true-false questions, 500 easy multiple choice questions and 400 difficult multiple choice questions.
    If a question is selected at random from the test bank, what is the probability that it will be:
    a) An easy question
    b) An easy multiple choice question
    c) An easy question, given that it is a multiple choice question.

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    Solution Preview

    Total number of questions
    = 300 + 200 + 500 + 400
    = 1400

    a) Number of easy questions: 300 + 500

    Solution Summary

    The solution calculates the probability from a given situation.