ECZ 2026 · GCE Paper 1 — Matrices
Given that matrix A = 34-10 and matrix B = -13, find AB.
- A. -6-4
- B. 151
- C. 91
- D. 19
Verified working — step 1
AB is (2 × 2)(2 × 1), so the answer is a 2 × 1 column. Each entry is a row of A times the column B: multiply matching entries and add.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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