A teacher wrote down on the blackboard some consecutive nature numbers starting from 1,2,3......Then he erased a certain number from them,and the average of the rest numbers was十三又是三分之八.Try to find the number erased.

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Ateacherwrotedownontheblackboardsomeconsecutivenaturenumbersstartingfrom1,2,3......Thenheerasedacert

A teacher wrote down on the blackboard some consecutive nature numbers starting from 1,2,3......Then he erased a certain number from them,and the average of the rest numbers was十三又是三分之八.Try to find the number erased.
A teacher wrote down on the blackboard some consecutive nature numbers starting from 1,2,3......Then he erased a certain number from them,and the average of the rest numbers was十三又是三分之八.Try to find the number erased.

A teacher wrote down on the blackboard some consecutive nature numbers starting from 1,2,3......Then he erased a certain number from them,and the average of the rest numbers was十三又是三分之八.Try to find the number erased.
答案:2.3.4 被擦掉了

老师在黑板上写下了一些相邻的自然数:1,2,3... ...。然后他从中擦掉了一个数字,剩下的数字的平均数是十三又是三分之八。找出被擦掉的数字。

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