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歡迎您訪問數學考題練習:在實數-,0.80808…,,,,0中屬于無理!

數學考題練習:在實數-,0.80808…,,,,0中屬于無理

更新時間:2024-01-12 16:28:08作者:貝語網校

在實數-,0.80808…,,,,0中屬于無理數的有

A.1個

B.2個

C.3個

D.4個

試題答案

C

試題解析

0.80808…,是循環小數,是有理數,=-4,是有理數,根據無理數的定義判斷其它各個數即可.

解答:無理數有-,,,共3個,

故選C.

點評:本題考查了無理數,注意:無理數是指無限不循環小數,包括:①含π的,②開方開不盡的根式,③一些有規律的數.

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