Primitive roots & Indices-Lecture 11

This video is about Primitive roots & Indices -Lecture 11.
Here I have considered a criteria to for solvability of a non-linear congruence with example.

This video is about Primitive Roots & Indices | Lecture 9. Here now I have introduces Index of an integer a mod n, where r is primitive root of n.

Here is the link to previous videos.