7. Which of the following is NOT a well defined set?
A. { a good singer in the Philippines }
B. { the four fundamental operation }
C. { an even prime number}
D. { vowels in the alphabet }

For nos. 8-11, refer to the given sets below.
U = {1,2,3,4,5,6,7,8,9, 10, 11, 12
P = {2,4,6,8,10,12)
Q = {4,8,12)
R = {8, 16)

8. What is the union of P and R?
A. PUR = {2,4,6,8,10}
B. PUR = {8,16}
C. PUR = {8}
D.PUR = {2,4,6,8,10,12,16}

9. What is the intersection of Q and R?
A. Q R = {4}
B.Q R = {8}
C.On R = {4,8)
D.Q R = {12,16)

10. What is R-Q?
A. 4
B.6
C. 8
D. 16

11. What is the complement of P or P'?
A.{1,3,5,7,9,11)
B. {1,2,3,4,5)
C. { 2,4,6,8,10)
D. {7,8,9,10,11,12}


Pa help, ipapass nato...​