Problem-Solving and Data AnalysisEasy–MediumProbability from a spinner with unequal groups
Problem-Solving and Data Analysis practice question
A spinner has 12 equal sections: 3 are red, 4 are blue, and the rest are green. What is the probability that one spin lands on red?
Answer: 1/4 or 0.25
3 of the 12 equal sections are red: 3/12 = 1/4.
Common wrong answers
- If you answered 3
- 3 is the count of red sections, not a probability.
- If you answered 1/3
- 1/3 is 4/12, the blue probability.
- If you answered 5/12
- 5/12 is the green probability.
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