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Single and Combined Events — Free MYP1 Mathematics Practice Questions
1QuestionCalculating Combined Probabilities BasicConcept Practice
2 marks~3 minCriterion C
A spinner has three equal sections: red, blue, and green. A second spinner has four equal sections: yellow, orange, purple, and pink.
a
State the probability notation for spinning red on the first spinner and yellow on the second spinner. [1]
b
Describe what each part of your notation means. [1]
Solutions
2QuestionCalculating Combined Probabilities BasicConcept Practice
2 marks~3 minCriterion A
The tree diagram shows the probabilities for spinning a spinner and then flipping a coin.
First spin: ,
From A: ,
From B: ,
Calculate the probability of spinning A and then flipping heads. Give your answer as a decimal. [2]
First spin: ,
From A: ,
From B: ,
Calculate the probability of spinning A and then flipping heads. Give your answer as a decimal. [2]
Solutions
3QuestionSolving Real-Life Problems with Combined EventsConcept Practice
2 marks~3 minCriterion B
A spinner has three equal sections: Red, Blue, and Green. A coin has two sides: Heads and Tails. The tree diagram shows all possible outcomes when the spinner is spun once and the coin is flipped once.
a
List all six combined outcomes shown in the tree diagram. [1]
b
Explain how the total number of combined outcomes can be found using the number of spinner sections and coin sides. [1]
Solutions
4QuestionProbability of a Single Event OccurringConcept Practice
2 marks~3 minCriterion D
A weather forecaster says there is a 30% chance of rain tomorrow.
a
Describe what this probability means for someone planning a picnic. [1]
b
Identify one reason why past weather data may not give an accurate prediction. [1]
Solutions
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