Write down the power set of the following sets. (i) A={a,b} (ii) B={1,2,3} (iii) D={p,q,r,s} (iv) E = ∅

Write down the power set of the following sets.
(i) A={a,b} (ii) B={1,2,3} (iii) D={p,q,r,s} (iv) E = $\emptyset$

Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!

(i) The of A are Ø, {}, {}, {, b}
The power set of A
P(A) = {, {a}, {b}, }
(ii) The subsets of are , {}, {}, {3}, {,2}, {2, }, {1,3}, {1, , 3}
The power set of B
P() = {Ø, , {2}, {3}, , {2,3}, {1,3}, }
(iii) The subset of D , {}, {9}, {}, {s}, {p, }, {p, r}, {p, s}, {9, r}, {9, s},
{r, s},{p, q, r}, , , {p,q, s}, {p, q, r, s}}
The power set of D
P(D) = {0, {p}, , {r}, {s}, {p, q}, , {p, s}, {q, r}, , {r, s},
{p, q, r}, {q, r, s}, {p, r, s}, {p, q, s}, }
(iv) The power set of E
P() = { },