Maths-
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Question

If A equals open curly brackets 1 comma blank 2 comma blank 3 comma blank 4 close curly brackets comma then the number of subsets of set A containing element 3, is

  1. 24  
  2. 28  
  3. 8  
  4. 16  

The correct answer is: 8


    Each subset will contain 3 and any number of elements from the remaining 3 elements 1, 2 and 4
    So, required number of elements equals 2 to the power of 2 end exponent equals 8

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