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​Q19: Question – Paper 2 – November 2017
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Question
19)
​There are only blue cubes, yellow cubes and green cubes in a bag.

There are
  • twice as many blue cubes as yellow cubes
  • and four times as many green cubes as blue cubes.

Hannah takes at random a cube from the bag.

​Work out the probability that Hannah takes a yellow cube.
[3 marks]