九九さがし app for iPhone and iPad

It is a practice series of the multiplication table following "KUKU Training".

Instructions called "Find the multiple of 2" like that.
Please choose all the answers from 25 displayed numbers.
The color of the panel yellows when you choose it.
And please tap "Answer".

Please select the answer of steps of two of the multiplication table all if it is a stage of "Multiple of 2".

It advances to the next stage when the answer that you selected is correct, and the warning sound becomes it when wrong.
When your selection is insufficient or a wrong figure has been selected, it doesnt advance it to the next stage.

If the time limit is passed, the game is ended.
When the game ends, displays the correct answer.

Well, to which stage can you advance?