Union Questions


1. The union of two sets A and B is a set consisting of all the elements of set A and set B.


2. A={1,4,5}, B={3,9,11}




3. A={-1,3,4}, B={2,3,9}, AÈB=?




4. A={ }, b={-1,8,3,4,6}, AÈB=?




5. A={1,2,4,6,8}, b={ }, AÈB=?




6. A={4,5,7,11}, B={-1,2}, AÈB=?




7. A={ }, B={ }, AÈB=?




8. A={1.2, 1.4, 1.6, 1.9}, B={1.7, 1.5, 1.6}, AÈB=?




9. A={1.2, 1.8, 1.14}, B={4,3}, AÈB=?




10. A={0.1, 0.2, 0.3}, B={1.1, 1.3}, AÈB=?




11. A={1/2, 1/4, 1/6}, B={1/3, 1/5, 1/4}, AÈB=?




12. A={3/5, 8/5, 9/5}, B={1, 3, 9}, AÈB=?




13. A={0.8, 0.6, 0.9}, B={1/2, 1/4}, AÈB=?




14. A={1/2, 1/3, 1/4}, B={-1, -3, -7}, AÈB=?




15. A={-1, 1/2, -2, 1/4}, B={1/2, -4, 1/6, -7}, AÈB=?




16. A={ }, B={1/2, 1/5, 1/7, 1/9}, AÈB=?




17. A={-3, 5/2, -6, 7/3}, B={-4, 0}, AÈB=?




18. B={ }, C={-1, 2/3, 4, -6}, BÈC=?




19. B={1/2, 1/4, -1/9}, C={3,4}, BÈC=?




20. U={-1, -3, -9}, Y={-1, 6}, UÈY=?




21. Z={a, b, c, d}, Y={a, b, x, z}, ZÈB=?




22. A={a, p, s}, B={s, x, t, m}, AÈB=?




23. D={-2, a, 3, q, 4}, F={f, 9},DÈF=?




24. U={a, c, k, -1, m}, Y={ }, UÈY=?




25. L={a, 1/2}, M={b,1/4, d}, LÈM=?







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