SimpleBrainTraining

It is simple brain training application to judge from ◯ or an X whether the calculation result of one column - three columns of numbers is a correct answer or injustice. Can several continuations answer it correctly? ＃ The division cuts off a decimal. 　example 　30 ÷ 4 ＝ 7 　30 ÷ 31 ＝ 0 [tag] Brain training calculation ◯× time killing