P={2, 1,3, 9, 1/2}; Q = {1,21/2,3, 7} and R = {5, 4, 21/2}. Find
MATHEMATICS
WAEC 1991
P={2, 1,3, 9, 1/2}; Q = {1,21/2,3, 7} and R = {5, 4, 21/2}. Find P∪Q∪R
- A. (21/2)
- B. (1, 9)
- C. (1, 2, 3, 4, 5, 6, 7)
- D. (1/2, 1, 2, 21/2, 3, 4, 5, 7, 9)
Correct Answer: D. (1/2, 1, 2, 21/2, 3, 4, 5, 7, 9)
Explanation
P = {2,1,3,9,1/2}; Q = {1,21/2,3,7}
R = {5,4,212}
P∪Q∪R = {1/2,1,2,21/2,3,4,5,7,9}
= {1/2,1,2,21/2,3,4,5,7,9}
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