ECZ 2016 · GCE Paper 1 — Sequences and Series
What is the position of 999 in the sequence represented by the nth term n³ − 1?
- A. 31st
- B. 9th
- C. 10th
- D. 100th
Verified working — step 1
Set n³ − 1 = 999: n³ = 1000, so n = ∛1000 = …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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