ECZ 2011 · O-Level Paper 1 — Probability
Six pupils obtained the following marks in a Mathematics Contest: 23, 24, 39, 40, 26, 37. Find the probability that a pupil selected at random obtained more than 27 marks.
- A. 13
- B. 12
- C. 23
- D. 16
Verified working — step 1
The marks above 27 are 39, 40 and 37 - three of the six. The probability is 36= …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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