Math Game (Android Studio JAVA)

Keep learning guys!
Hi fellas, I am just new to android and just wanna share with you some of my project practices, if you want the source code just pm me on Discord I don't have git hub account at this time
Discord:
A book that I've read:
Learning Java By Building Android Games
Head-First-Android-Development-2015
Music:
WoDotA BGM - Funny day