ECZ 2019 · O-Level Paper 1 — Probability

A number is chosen at random from the set {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}. Find the probability that it is a perfect square.

Verified working — step 1

Perfect squares in the set are 1, 4 and 9.

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Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.

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