Q4 of 71 Page 32

If a finite set A has m elements, then the number of non-empty proper subsets of A is

Given Set A with ‘m’ number of elements


So, the number of power subset for given set is given by 2m – 1


∴ option (B) is true.

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2

If X = {a, {b, c}, d}, which of the following is a subset of X?

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Which of the following statements are true?

i. For any set A, A is a proper subset of A


ii. For any set A, Φ is a subset of A


iii. For any set A, A is a subset of A

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The number of subsets of the set {10, 11, 12} is

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Which of the following is correct?