Question

S = {1, 2, 3, 4, 5, .... , 10}
P = {2, 3, 5, 7}
Q = {1, 3, 5, 7, 9 }
P U Q = ....

Answer 1

P= {2,3,5,7}
Q{1,3,5,7,9}
P U Q ={1,2,3,5,7,9} 

Answer 2

P U Q = {3, 5, 7}

U = irisan