Mathematics · May / June 2020 · Paper 21 · Question 4
0580
As printed in the paper
The question as text
A bag contains blue, red, yellow and green balls only. A ball is taken from the bag at random. The table shows some information about the probabilities. Colour Blue Red Yellow Green Probability 0.15 0.2 0.43
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4(a)[2]
0.22 oe [2]
M1 for 0.15 + 0.2 + ? + 0.43 = 1 or better
4(b)[1]
40 [1]
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