Higher November 2022 Paper 3 Q13

AQACurrent spec3 marksMultiple EventsTree Diagrams

13 A fair, ordinary dice is rolled and a counter is taken at random from a bag.

The tree diagram shows the probabilities.

Tree diagram. Dice: Even number 0.5, Odd number 0.5. Counter, after each: Red 0.1, Blue 0.3, Green 0.6
(a) How do the probabilities show that all the counters in the bag are red, blue or green? [1 mark]
(b) Circle the probability that the counter is red or blue. [1 mark]
  • 0.0009
  • 0.8
  • 0.03
  • 0.4
(c) Circle the probability that the dice lands on an even number and the counter is blue. [1 mark]
  • 0.15
  • 0.3
  • 0.35
  • 0.8
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