Question

Write the power set of each set in roster notation.
1) a
2) 1, 2

Answer 1

The power set of a set is the set of all possible subsets of that set.

Step-by-step explanation:

The power set of a set is the set of all possible subsets of that set. It is denoted by P(A) or 2^A, where A is the given set. To find the power set in roaster notation, we list out all the subsets of the given set.

1) For set {a}, the power set is {{}, {a}}.

2) For set {1, 2}, the power set is {{}, {1}, {2}, {1, 2}}.