Penjelasan dengan langkah-langkah:

Y = {7, 11, 13, 17, 19, 23}

n(Y) = 6

banyak himpunan bagian

2ⁿ = 2⁶ = 64

dari segitiga pascal

- him kosong = 1

- him terdiri 1 anggauta = 6

- himp terdiri 2 anggauta = 15

- himpunan terdiri 3 anggauta = 20

- himpunan terdiri 4 anggauta = 15

- himp terdiri 5 anggauta = 6

- himpunan 6 anggauta = 1

a. {7,11}, {7,13}, {7,17}, {7,19}, {7,23}

{11, 13}, {11,17}, {11,19}, {11,23}, {13,17}

{13,19}, {13,23}, {13,23}, {17,23}, {19,23}

b. {7,11,13}, {7,11,17}, {7,11,19}, {7,11,23}, {7,13,17}

{7,13,19}, {7,13,23}, {7,17,19}, {7,17,23}, {7,19,23},

{11,13,17}, {11,13,19} {11,13,23}, {11,17,19}, {11,17,23}

{11,19,23}, {13,17,19}, {13,17,23}, {13,19,23}

{17,19,23}

c. {7,11,13,17}, {7,11,13,19}, {7,11,13,23}, {7,11,17,19},

{7,11,17,23}, {11,13,17,19}, {11,13,17,23},

{11,17,19,23}, {13,17,19,23}