排列3-快速计算 app for iPhone and iPad

Accurate and fast, the operation is sometimes so 简单, let us enter a convenient and fast time, arrange 3 - quick is so simple!

Fast calculation

Application:
This app is an integration of the three basic application of permutation and combination formula, no matter you are a college student or an accountant, is when youre in the ordering of the calculation for complicated calculation, reunion moment but when you find this app, congratulations to you, its time to say goodbye to repeat the calculation!
Arrange 3 - you deserve it!