Brain Training for 30 secondsSubtraction calculation brain age measurement!
Brain age measured in brain training subtraction calculation!
Answers on choosing the answer between 30 seconds!
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[Subtraction calculation practice mode]
(1 Keta one digit) (2 Keta 2 digits) (3 Keta 3 digits) (1 Keta 2 digits), such as,
This mode can subtraction practice by setting yourself.
[Brain Age measurement mode]
Answers on choosing the answer between 30 seconds!
Measure your brain age
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