Inverse of a Number

*To*: mathgroup at smc.vnet.net*Subject*: [mg2552] Inverse of a Number*From*: "Enrico C. Walker" <ewalke1 at gl.umbc.edu>*Date*: Mon, 20 Nov 1995 01:13:51 -0500*Organization*: University of Maryland, Baltimore County

First of all, I thank you all those who responded to my earlier question. My second question is How to find the inverse of a number in some Modulo system. For example: 3*9 Mod 26 = 1, therefore inverse of 3 is 9 in Mod 26 system. a*b Mod N = 1, therefore a is inverse of b and vice versa in N system. How can I solve b in Mathematica where a and N are given. Please advise. -RICO-