Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Divisibility & congruences

  1. Mar 15, 2009 #1
    which elements of Z/60 are invertible?? what are their inverses?

    do we have any quick way to do this kind of question??
  2. jcsd
  3. Mar 15, 2009 #2


    User Avatar
    Science Advisor
    Homework Helper

    Hint: gcd(n, 60).
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook