Forgot password? New user? Sign up
Existing user? Log in
For how many positive integers xxx less than 403240324032 is x2−20x^{2} - 20x2−20 divisible by 16 and x2−16x^{2} - 16x2−16 divisible by 20?
Source: OMO Spring 2016
Problem Loading...
Note Loading...
Set Loading...