ECZ 2023 · O-Level Paper 1 — Matrices
Given that A = 124 and B = 304, find (b) AB.
- A. 7
- B. 19
- C. 3016
- D. 16
Verified working — step 1
A (1 × 3) row times a (3 × 1) column collapses to a single number: multiply matching entries, then add the products.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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