ECZ 2011 · O-Level Paper 1 — Sequences and Series
Write the nth term of the sequence 5, 7, 9, 11, ...
- A. n + 4
- B. 2n + 3
- C. 2n + 5
- D. 3n + 2
Verified working — step 1
The common difference is 2, so the nth term is 2n + c. At n = 1 the term is 5, so c = …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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