Question

write all the subsets of B={123} ​

Answer 1

Answer:

Let A={1,2,3}

Number of elements in A is 3

Hence n=3

Number of subsets of A=2n where n is the number of elements of the set A

=23=8

The subsets of {1,2,3} are

ϕ,{1},{2},{3},{1,2},{2,3},{1,3} and {1,2,3}

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