ECZ 2021 · O-Level Paper 1 — Sequences and Series
The third and fourth terms of an Arithmetic progression are 6 and 3 respectively. Find the (a) first term.
- A. -3
- B. 9
- C. 12
- D. 15
Verified working — step 1
Consecutive terms hand you d immediately - then walk BACKWARDS from the third term to the first.The full step-by-step working and final answer, plus the video lesson for this topic, 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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