ECZ 2022 · O-Level Paper 1 — Sequences and Series
Given that 2, -1, -4 ... are consecutive terms of an Arithmetic progression, find the (b) formula for the nth term.
- A. 5 - 3n
- B. 2 - 3n
- C. 5 + 3n
- D. 2 + 3n
Verified working — step 1
a = 2 and d = -3The 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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