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4.1 Probability (A-level only)

4.1 Probability (A-level only)

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Question 123

A museum archives contain 13 ancient scrolls that require restoration: 6 from the Dynasty Era, 4 from the Classical Era, and 3 from the Hellenistic Era. The head curator selects two scrolls at random, one after the other without replacement, to be sent to a specialist lab.

a.

Construct a complete tree diagram to illustrate all the possible outcomes and the associated conditional probabilities for the selection of the two scrolls. State your probabilities clearly.

[3]
b.

Determine the exact probability that the curator selects one Classical Era scroll and one Hellenistic Era scroll.

[2]
Markscheme

4.1 Probability (A-level only) Questions

  1. A Level
  2. /Maths
  3. /4.1 Probability (A-level only)

164 exam-style questions on WJEC A Level Maths 4.1 Probability (A-level only), covering 4.1.1 Probability (A-level only), 4.1.2 Probability (A-level only), and 4.1.3 Probability (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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