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Math problem additional problem fourth grade knowledge has a problem. Who can help brothers and sisters?
Be sure to take it first, and the other party will take it first. It's smart enough. You will lose.

Help yourself to four first.

How much does the other party take?

You can add up all the numbers you got from him and make it 5.

After you take 16 times, he takes 15 times.

4+ 15*5=79

The rest must be his.

So you won.