Given U = natural numbers from 11 to 20, A = odd numbers from 11 to 20 and B = even numbers from 11 to 20, find A ∪ B.

University of Ilorin MTH101 2026-exam past question

1. {11, 13, 15, 17, 19}
2. {12, 14, 16, 18, 20}
3. {11, 12, 13, 14, 15, 16, 17, 18, 19, 20}
4. {13, 15, 17, 19}

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