ECZ 2014 · O-Level Paper 1 — Computer and Calculator
Find the exact value of 2 23− 712.
- A. 2 512
- B. 2 112
- C. 1 1112
- D. 2 19
Verified working — step 1
2 23= 83. Over a denominator of 12: 83= 3212, so 3212− 712= 2512= …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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