Tolong jawab pertanyaan ini pakai cara

2.a. {3,4,6,8,9}
b. {3,4,6,8,9}
c. {2,3,4,5,6,7,8}
d. {2,3,4,5,6,7,8}

3. a.A={0,6,7,8,9,10,11,12}
b.A={0,2,4,6,8,10,12
c.A={0,1,4,6,8,9,10,12}

4. a.{1,2,3}
b.{2,4,5}
maaf ya kalau no.4 ada yg salah