(1 1 1 2 3 1 Let A = If B = (b, b2 b3) is the inverse of A 1 2 2 then which of the following is b2 ? 1 -3 (3) 1 -1 B does not exist because A is non-invertible -2 3

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Q: (c) How many of the elements of Z186 have multiplicative inverses?

A: To find the number of elements in the set of integers modulo 186, which have multiplicative inverse.

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Q: Q2, please show work and show work in simplest way possible. Thanks.

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