Question

Find number of subsets of a given set and verify that if a set has n elements then the number
of subsets is 2
n
.

Answer 1

Answer:

If a set contains ‘n’ elements, then the number of subsets of the set is 22.

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Answer 2

Number of Subsets of a given Set:

If a set contains 'n' elements, then the number of subsets of the set is 22.

If a set contains 'n' elements, then the number of proper subsets of the set is 2n - 1.

⇒ Number of proper subsets of A are 3 = 22 - 1 = 4 - 1.