# If A =  then number of subset of A is  Option 1) 16 Option 2) 15 Option 3) 4 Option 4) None of these.

As we learnt in

SUBSETS -

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

- wherein

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

Since number of elements of A=4

Number of subsets =

Option 1)

16

Correct

Option 2)

15

Incorrect

Option 3)

4

Incorrect

Option 4)

None of these.

Incorrect

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