yg bisa tolong jawab y makasih.....

1.
>{a,b,c} = { }, {a}, {b}, {c}, {a,b}, {a,c}, {b,c}, {a,b,c} = 8
>{a,b,c,d} = { }, {a}, {b}, {c}, {d}, {a,b}, {a,c}, {a,d}, {b,c}, {b,d}, {c,d}, {a,b,c}, {a,b,d}, {a,c,d}, {b,c,d}, {a,b,c,d} = 16
>{a,b,c,d,e} = { }, {a}, {b}, {c}, {d}, {e}, {a,b}, {a,c}, {a,d}, {a,e}, {b,c}, {b,d}, {b,e}, {c,d}, {c,e}, {d,e}, {a,b,c}, {a,b,d}, {a,b,e}, {a,c,d}, {a,c,e}, {a,d,e}, {b,c,d}, {b,c,e}, {b,d,e}, {c,d,e}, {a,b,c,d}, {a,b,c,e}, {a,b,d,e}, {a,c,d,e}, {b,c,d,e}, {a,b,c,d,e} = 32

2.
>2 = 4 = 2 pangkat 2
>3 = 8 = 2 pangkat 3
>4 = 16 = 2 pangkat 4
>5 = 32 = 2 pangkat 5
>6 = 64 = 2 pangkat 6

3.
> 3 anggota = 15
>4 anggota = 6
>5 anggota = 1

Semoga membantu...