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BITSAT2009MathematicsSets and RelationsActual

If (A= 1,2,3,4,5 ), then the number of proper subsets of (A ) is

Options

  1. A31
  2. B38
  3. C48
  4. D54

Correct answer

A. 31

Step-by-step solution

Number of proper subsets of (A=2^n-1 ) Given: (A= 1,2,3,4,5 ) Here (n=5 ) ( ) no. of proper subsets (=2^5-1 )

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