ECZ 2012 · O-Level Paper 1 — Sets
Given that E = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12}, list the subset B = {x : (12)x >= 5 12}.
- A. {11}
- B. {12}
- C. {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}
- D. {11, 12}
Verified working — step 1
Multiplying both sides by 2 gives x >= 11. The elements of E satisfying this are 11 and 12, so B = …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.
Have a different question?
Search it — if it is from a past paper or a school mock, chances are we have it worked out, or one that uses the same method.
Search any past-paper question