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Math Help - For all a,b in ℤ/n, can a be divided by b in ℤ/n if, and only if, gcd(n,b) = 1?

  1. #1
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    For all a,b in ℤ/n, can a be divided by b in ℤ/n if, and only if, gcd(n,b) = 1?

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  2. #2
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    Quote Originally Posted by feyomi View Post
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    No. For example, in \mathbb{Z}/n\mathbb{Z}\,,\,n\geq 4\,,\,\,2 divides 4 since 4=2\cdot 2

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