ECZ 2010 · O-Level Paper 1 — Probability
A pupil takes one bottle top at random from a bag. The probability that it is a Fanta top is 0.25 and the probability that it is a Sprite top is 0.4. Find the probability that it is a Cocacola top.
- A. 0.65
- B. 0.6
- C. 0.15
- D. 0.35
Verified working — step 1
The three probabilities sum to 1, so P(Cocacola) = 1 - 0.25 - 0.4 = …The full step-by-step working and final answer are included with Premium — checked against ECZ marking standards.
Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.
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