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什么是平方和?简单解释 - Practical Tips

什么是平方和?简单解释

by Corinna

每个人可能都听说过 “数位之和 “这个词,但很多人从学生时代起就忘记了数位之和到底是什么。我们将给你启发

交叉和:它到底是什么?

  • 校验和是一个多位数的各个数字之和。
  • 例如:251 的数字之和是 8,因为 2 + 5 + 1 = 8。
  • 数字之和只能由自然数组成。因此,这个数必须大于零,并且不能包含小数位。

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