ECZ 2014 · O-Level Paper 1 — Probability
The brand names IYALOWA, YONZUNA, YATOWALA, YEMUNATI, YATOBALA, ILWEELA and CHINAYEME contain 54 letters in total, of which 3 are T and 3 are W. One letter is chosen at random from these words. Find the probability that it is either a T or a W.
- A. 19
- B. 118
- C. 29
- D. 16
Verified working — step 1
Favourable outcomes = 3 T + 3 W = 6 out of 54 letters. P = 654= …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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