Let 's study ninety - nine! !
There are quizzes ranging from 1 to 9.
If you answer, you will be able to do ninety-nine! !
Try it all the time until you answer correctly It's 100 points in the test! !
<Description of application>
There are 9 problems each for 1 to 9 stages. (20 seconds)
Please answer with half-width numbers.
