ECZ 2020 · O-Level Paper 1 — Probability
The probability of Masamushi failing an examination is 310. What is the probability that she will pass that particular examination?
- A. 310
- B. 710
- C. 1310
- D. 1
Verified working — step 1
"Pass" and "fail" are the only two outcomes - opposite events - so their probabilities add up to 1.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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