Probability Trees for Clothing Choices

Probability Trees for Clothing Choices

Secondary 4

Susan has \(2\) white and \(6\) blue blouses, and \(10\) skirts of which \(6\) are white and \(4\) are yellow, in her cupboard. Every morning, she selects a blouse and a skirt at random.

  1. Copy and complete the tree diagram below.
Tree diagram for selecting a blouse and a skirt.
Tree diagram for selecting a blouse and a skirt.
  1. Calculate the probability that Susan
    1. selects a blouse and a skirt of the same colour,
    2. does not select a blue blouse and a yellow skirt.

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Answer:(b)(i) 3/20; (b)(ii) 7/10.

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