School Improvement in Maryland

Sample Item
Selected Response Item for Grade 8

Standard 5.0 Knowledge of Probability

Topic A. Sample Space

Indicator 1. Identify a sample space

Objective b. Determine the number of outcomes

Assessment limit: Use no more than 5 dependent events with no more than 10 outcomes in the first event

George has a bag of marbles. Inside the bag are 5 red marbles, 3 green marbles, and 2 blue marbles. He draws out two marbles in a row, without replacement. What is the number of outcomes?

  1. 10
  2. 20
  3. 90
  4. 100

Correct Answer
C. 90
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