If a set has $5$ elements, how many subsets does it have?
A$5$
B$10$
C$25$
D$32$
Answer & Solution
Correct answer: D. $32$
Number of subsets $= 2^{n}$ for $n$ elements. $2^{5} = 32$.
- **B** ($10$) is $\binom{5}{2}$ — only the $2$-element subsets.
- **C** ($25 = 5^2$) confuses with squaring the count.
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