Question: (a) For which values of a does ax = 1 have a solution in Zs? (b) For which values of a does ax = 1

(a) For which values of a does ax = 1 have a solution in Zs?
(b) For which values of a does ax = 1 have a solution in Z6?
(c) For which values of a and m does ax = 1 have a solution in Zm?

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