I expanded on the math quiz, adding exponent, root and log functions. 

I also put a number of validation checks, gave the player the option to exit the game at any point with their score being calculated based on the number of questions provided and the option to restart the game after finishing.

https://colab.research.google.com/drive/1f-81WBj0BU_eNwXkZDHHEy2Uj836l6mp?usp=sharing