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
(5, 4, 21/2)
E
(1/2, 1, 2, 21/2, 3, 4, 5, 7, 9)
Verified Correct Answer: E.
Step-by-Step Mathematical Solution
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}
Source: Myschool Past Questions Archive (Record #22926)