Question

the number of proper subsets of the set A=(2,3,4,5) is a) 16 b)15 c)14 d)17. please answer it fasttt


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Answer 1

The Number Of Proper of Proper Subsets is 15 .

The Number of Proper Subsets = 2^n - 1 , where n is the number of elements

Given :

A = (2,3,4,5) ; The Number of elements ( numbers ) is 4

So , 2^4 = 2 x 2 x 2 x 2 = 16  

2^4 - 1 = 16 - 1 = 15

So The Number of Proper subsets is 15

Option C

Answer 2

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