Find the number of subsets of the set A={5,7}

Option 1)  1

Option 2)  2

Option 3)  4

Option 4)  8

 

Answers (1)

A set A is said to be a subset of a set B if every element of A is also an element of B.

It is represented by \subset. eg. A \subset B if A={2,4} and B= {1,2,3,4,5}

 

 The subsets formed from the given set are \phi,{5},{7},{5,7}

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