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Probability

Probability

IP 4

A bag contains \(4\) red and \(3\) blue counters. Two are drawn without replacement.

  1. Draw and label a complete tree diagram.

  2. Find the probability that both are red.

  3. Find the probability that the colours differ.

  4. Find the probability that at least one is blue.

Solution:

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Answer:(a) Tree branches below. (b) \(\frac27\). (c) \(\frac47\). (d) \(\frac57\).

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