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Vijay Singh chauhan Asked a Question
November 5, 2020 10:03 ampts 30 pts
1 point Let S be a set and P(S) be the power set of S. Then {P(S), U} is not a group because A. P(S) is not closed w.r.to U. B.U is not associative. C. 1nverse does not exist. D. the identity clement does not exist. OA O B Oc O D 1 point Every automorphism fof the rational numbers Q under addition to itself has the form (a) f(x)-xf(1) (b) f(x)=xf(1) (C) f(x=xf(1) or -xf(1) (d) None of these OA O B OC O D
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  • Piyush thankyou
    For the second one I am not sure but Ans should be B
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  • Piyush Best Answer
    Ans is C for the first one
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