tolong jawab yaa pliss

H = {k,m,n,p}
Himpunan bagian dari H
{ } , {k} , {m} , {n} , {p} , {k,m} , {k,n} , {k,p} , {m,n} , {m,p} , {n,p} , {k,m,n} , {k,m,p} , {k,n,p}, {m,n,p}, {k,m,n,p}

a. {k,m} , {k,n} , {k,p} , {m,n} , {m,p} , {n,p}
 ada 6 himpunan

b. {k,m,n} , {k,m,p} , {k,n,p}, {m,n,p}
ada 4 himpunan