Question detail
notation check: a bag has 1 blue counters and 27 red counters. Find the probability of choosing a blue counter. Show your working one step at a time.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Probability
Question
notation check: a bag has 1 blue counters and 27 red counters. Find the probability of choosing a blue counter. Show your working one step at a time.
Answer
The final answer is 0.036. Probability uses favourable outcomes and total outcomes. The favourable outcomes are 1. The total outcomes are 28. Divide 1 by 28 and round to three decimal places. 0.036
Explanation
exam warm-up keeps the canonical answer 0.036 fixed before the model answer is written, so the worked solution and final answer agree.
Common mistake
Randomness and expected outcomes common mistake 1
Writing a final answer without showing the method that justifies it. This can weaken answers for: [Foundation and Higher] Apply ideas of randomness, fairness and equally likely events to calculate expected outcomes of multiple future experiments..
Show the method first, then give the final answer in the required form. Apply this directly to Randomness and expected outcomes.
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