<p>Given, <span>\(A = \{1, \{2, 3\}\}\)</span>. Find the number of subsets of A.</p>
Step-by-Step Solution
Key Concept: The number of subsets of a set with n elements is $2^n$, regardless of what those elements are.
<p><strong>Solution:</strong></p><p>The set A has elements: 1 and {2, 3}</p><p>Number of elements in A = 2</p><p>Number of subsets of A = $2^2 = 4$</p><p>The subsets are: $\emptyset, \{1\}, \{\{2,3\}\}, \{1, \{2,3\}\}$</p>
Correct Answer: 4