Probability & Relative Frequency

Answer one question at a time, check your work, and see the reasoning behind every solution.

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Verified answersClear, deterministic explanations

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Number of questions

1015202530

Difficulty

EasySmall equally likely sets and compact frequency tables.MediumLarger totals requiring fraction reduction.HardMore varied counts and less obvious reduced relative frequencies.

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Question 1 of 10

Solve the equation

A bag contains 9 red, 30 blue, and 13 green marbles. If one marble is selected at random, what is the theoretical probability that it is green?

3/47/263/131/4

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