ECZ 2023 · O-Level Paper 1 — Sequences and Series

Given that 25 and 13 are the first and third terms of an arithmetic progression respectively, find the (a) second term,

Verified working — step 1

First term = 25

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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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