If the last digit of an acceptable product code is 1, it must be true that the

Mehran September 1, 2016

@AlexisBloomberry you can access detailed whiteboard video explanations by yours truly for every game and question in this section.

Just tap the ▶️ button in the top right hand corner of the screen when viewing the questions inside of the app.

Hope these help! Please let us know if you have any other questions.