0580/31 Oct/Nov 2025, Question 14: Probability from Tables and Charts
Cambridge IGCSE Mathematics 0580 · Paper 31 (Core) · Calculator · 3 marks
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The question, in short
A bag holds red, yellow, blue and green cards. Red has probability 0.53 and yellow 0.19; blue to green is 5:2. Complete the probability table.
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Solution · 3 marks
- 1P(blue or green) = 1 − (0.53 + 0.19) = 0.28
- 2Blue = 5/7 × 0.28 = 0.20
- 3Green = 2/7 × 0.28 = 0.08
Answer| blue | green | | 0.20 | 0.08 |
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