Logical trainer /speed reading

Let the training to speed up the processing of your brain.
Please answer the question that will appear on the exam.

If you think about it, is the problem can be seen by anyone.
However, depending on the speed of the head, leaving the score difference is big.
And, as calculated by 100 squares, repeated practice, the speed goes up.

The problem is very simple. However, repeated practice, the speed is improved, the brain is activated.

Time it takes to training is one minute.
Please challenge!


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