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Total number of subsets of A={-1, 0,1}...

Total number of subsets of ` A={-1, 0,1}`.

A

1

B

3

C

4

D

8

Text Solution

Verified by Experts

The correct Answer is:
D
All possible subsets of A are
`phi , {-1}, {0}, {1}, {-1,0}, {0,1}, and {-1,0,1}`.
`therefore P(A) ={phi , {-1}, {0} , {1}, {-1,0}, {0,1} , {-1,1}, {-1,0,1}}`.
Thus, `n(A) =3 and n{P(A)}=8=2^3`.
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