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Paper 2Core or Extended Mathematics3 marks
A bag contains 5 red balls and 3 blue balls. A ball is drawn at random, not replaced, and then another ball is drawn.
Description
Conditional Probability with Balls
A bag contains 5 red balls and 3 blue balls. A ball is drawn at random, not replaced, and then another ball is drawn.
- a[3]
Calculate the probability that the second ball drawn is red, given that the first ball drawn was blue.
Aim for approximately 3 distinct marking points.
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Maths method check
- Topic focus: Conditional probability.
- Question style: structured_mathematics.
- Reasoning demand: reasoning.
- Check the operation, notation, units, and final answer form against the question before moving on.
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