ECZ 2018 · O-Level Paper 1 — Sets
Use set notation to describe the shaded region in the diagram below.
- A. A∩(B∪C)′
- B. A∩(P∩Q)′
- C. (P∪Q)′
- D. A∪(P∪Q)′
Verified working — step 1
The shaded region is inside set A, but outside both B and C. First, B∪C represents every part inside the two smaller circles. Its complement, (B∪C)′, is outside both circles and intersects with A giving: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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