ECZ 2023 · O-Level Paper 1 — Sets
Set A={x:1<x≤15,x is a prime number } and set B={x:0≤x<10,x is an odd number}. List the set A∩B.
- A. {1,3,5,7,9}
- B. {3,5,7}
- C. {3,5,7,11,13}
- D. {3,5,7,9}
Verified working — step 1
A prime number has exactly two factors, while an odd number is simply not divisible by 2. Thus,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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