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| 1. |
Write down all possible subsets of ` A={-1, 0,1}`. |
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Answer» 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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