4 5 dong please teman

5. P={13,15,17}
Q={15,17,19}
P U Q = {15,17}

Maaf yang aku tau cuma itu,maaf kalo salah:)

no. 4
A = {11,12,13,14,15,16,17,18,19}
B = (1,2,3,4,6,9,12,18,36}
A∩B = {12,18}

no. 5
P = {13,15,17}
Q = {15,17,19}
P∪Q = {13,15,17,19}