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Probability

Quick questions on Tree diagrams: combined and conditional probability - Edexcel GCSE Maths

2short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?
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A coin is flipped twice. Work out the probability of two heads. [2 marks]
What is q2?
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A bag has 33 red and 22 blue balls. One is taken and not replaced, then another is taken. Work out the probability both are blue.

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