下列个数:-2.1,3.14159,π,22\7,根号8,三次根号9,1.010010001······中,无理数有哪几个

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下列个数:-2.1,3.14159,π,22\7,根号8,三次根号9,1.010010001······中,无理数有哪几个
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下列个数:-2.1,3.14159,π,22\7,根号8,三次根号9,1.010010001······中,无理数有哪几个
下列个数:-2.1,3.14159,π,22\7,根号8,三次根号9,1.010010001······中,无理数有哪几个

下列个数:-2.1,3.14159,π,22\7,根号8,三次根号9,1.010010001······中,无理数有哪几个
无理数4个:π、根号8、三次根号9,1.010010001······