Tolong dari no 1-3 buat besok

1. ( A U B ) - A
= {1,2,3,5} - {1,2,3}
= {5}

2. (H - K) (Irisan) L
({2,4,5} - {1,4,7}) (Irisan) L
= {2,5} (irisan) {7,5,1}
= {5}

3.
D = {5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100}


E = {10, 20, 30, 40, 50, 60, 70, 80, 90, 100}

D - E = {5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90, 95, 100} - {10, 20, 30, 40, 50, 60, 70, 80, 90, 100}
= {5, 15, 25, 35, 45, 55, 65, 75, 85, 95}