Five number games of brain training.
difficulty that go up every day.
It is brain warm up for work or study every day.
Trying to establish the formula.
— Computing, Reaction
Fill 1 to 4 once in that each column, each row, and each of the four 2×2 subgrids.
— Reasoning, Concentration
Choose a correct formula from answers.
— Memory, Computing
Turning the card and complete all of the pairs.
— Memory, Reasoning
Find out different number from two group.
— Concentration, Reaction
Updated some UI.
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