A) n
B) \[{{n}^{2}}\]
C) \[{{2}^{n}}\]
D) \[2n\]
Correct Answer: C
Solution :
Number of subsets of \[A{{=}^{n}}{{C}_{0}}{{+}^{n}}{{C}_{1}}+.........{{+}^{n}}{{C}_{n}}={{2}^{n}}\].
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