2. a. P¹ = {3, 5, 7, 11, 13, 17, 19}

b. P² = { }

c. P³ = {3, 5, 7}

d. P⁴ = {11, 13, 17, 19}

3. a. 10 anggota

• {2, 3} {2, 5} {2,7} {2, 11}
• {3, 5} {3, 7} {3, 11} {5, 7}
• {5, 11} {7, 11}

b. 10 anggota

• {2, 3, 5} {2, 3, 7} {2, 3, 11}
• {2, 5, 7} {2, 5, 11} {2, 7, 11}
• {3, 5, 7} {3, 5, 11} {3, 7, 11}
• {5, 7, 11}

c. 5 anggota

• {2, 3, 5, 7} {2, 3, 5, 11}
• {2, 5, 7, 11} {2, 3, 7, 11}
• {3, 5, 7, 11}

4. a. {1, 2, 3, 4, 5,}

• banyak anggota /n = 5
• banyaknya himpunan bagian = 2⁵ = 32

b. {5, 7, 11, 13, 17, 19}

• n = 6
• banyaknya himpunan bagian 2⁶ = 65

c. P = {s, t, a, b, i, l}

• n = 6
• banyak himpunan bagian 2⁶ = 64

d. Q = {senin, selasa, rabu, kamis, jumat, sabtu, minggu}

• n = 7
• banyak himpunan bagian 2⁷ = 128

5. a. Q = ∅

n (Q) = 0

banyaknya himpunan bagian 2n = 2⁰ = 1

b. n (Q) = 4

banyaknya himpunan bagian 2⁴ = 16

c. a = {1}

n (Q) = 1

banyaknya himpunan bagian = 2¹ = 2

d. Q = {p, q, r, s, t, u}

n (Q) = 6

banyaknya himpunan bagian 2⁶ = 24

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