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0是有理數 有理數包括整數和分數,0是整數 無理數是無限不循環小數,如√5,π,0.1010010001…等
實數可以分為有理數和無理數. 其中無理數就是無限不循環小數,有理數就包括整數和分數. 比如√2,π都屬於無理數,1/2、6都屬於有理數.
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