Brain Training

Within the time limit of 30 seconds I will continue to solve as many of the computational problems to.

Input method is the following two types.
Selection type: I choose the one from which is prepared in the four answer.
Input type: one-digit numbers and then answer by typing.
Clears the number you entered in Delete.
I will do the answer in the decision.

Point to be added is incremented each time you want to correct in a row.
Example) two questions consecutive correct answer: 2 points, 3 questions consecutive correct answer: 3 points