*compulsory*(as opposed to elective) courses from other departments like Electronics, Material Sciences, Mathematics etc, apart from my courses in the humanities. I'm not sure if I should include these courses in computing my major GPA. What about my basic first year courses in physics and mathematics?

For example, I have done the following courses:

Introduction to electronics - Dept. of Electrical Engg.

Physics of Materials - Dept. of Metallurgy

Integral Transforms - Dept. of Mathematics

Mathematics I - Dept. of Mathematics

Are there any rules or guidelines regarding which courses I should include? My GPA seems to shift by ~ 0.2 depending on which way I calculate it