let n=pq where p,q are distinct positive odd prime numbers.let [a] be a fixed non zero element in Zn. How many distinct solutions are there in Zn to the equation: [a][x]=[1]?

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- February 7th 2010, 08:16 PMDeepumodular arithmetic proof
let n=pq where p,q are distinct positive odd prime numbers.let [a] be a fixed non zero element in Zn. How many distinct solutions are there in Zn to the equation: [a][x]=[1]?

- February 8th 2010, 06:03 AMtonio