Tolong dijawab yang bisa buat UAS besok trims

A. {1,2,3,4,5,6,7} irisan {2,3,5,7} = {2,3,5,7}
b. {1,2,3,4,5,6,7} gabungan {2,3,5,7} = {1,2,3,4,5,6,7}
c. {1,2,3,4,5,6,7} selisih {2,3,5,7} = {1,4,6}
d. {2,3,5,7} selisih {1,2,3,4,5,6,7} = {}

Itu salah jwbnya nanti aku kasih lagi oke