Number of proper subsets of $\{1, 2, 3, 4\}$ is

Number of proper subsets of $\{1, 2, 3, 4\}$ is
  1. $15$
  2. $16$
  3. $8$
  4. $14$

Solution

Proper subsets exclude the set itself: $2^{4} - 1 = 15$.

Asked in: MH-SSC-9

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