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COMEDK2015MathematicsSets and Relations

If a set A has 4 elements, then the total number of proper subsets of set A , is

Options

  1. A16
  2. B14
  3. C15
  4. D17

Correct answer

C. 15

Step-by-step solution

n(A)=4 (given) Total number of subsets of A=2⁴=16 Number of proper subsets =16-1=15

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