Learning to ninety-nine
Is a simple app.
By default, pressing the start,
20 questions are questions the old random-nine problems,
Once I get all the correct response rate.
Settings from the menu button on the number of questions
20 questions, 15 questions, 10 questions to choose from.
practice-mode does not have your assignment.
I get a hint of the answer.
The listing will display a list of 9*9.
Internet connection permission, the
Are used only for ads.
from 2 reviews