0580/11 May/Jun 2023, Question 15: Basic Probability
Cambridge IGCSE Mathematics 0580 · Paper 11 (Core) · Calculator · 2 marks
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The question, in short
Eric has four paint colours with probabilities 0.3, 0.35, 0.13 and x; find x using the fact that all probabilities sum to 1.
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Solution · 2 marks
- 1Probabilities add to 1
- 20.3 + 0.35 + 0.13 = 0.78
- 3x = 1 − 0.78 = 0.22
Answer0.22
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