a dan b apa iya jawabannya?

a) anggota himpunan
P = {-5,-4,-3,-2,-1,0,1,2,3,4,5}
Q = {-8,-7,-6,-5,-4,-3,-2,-1,0,1,2}
R = {-2,-1,0,1,2,3,4,5,6,7,8}
S = {-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,0,1,2,3,4,5,6,7,8,9,10}
b) P gabung Q = {-8 sampai 5}
P gabung R = {-5 sampai 8}
Q gabung R ={-8 sampai 8}
P gabung Q gabung R = {-10 sampai 10}