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(rational number)¡A´N¬O·í¥¦¤Æ¦¨¤p¼Æ®É¡A²×·|¦³¤Ñ«½Æ¦Û¤v¡C¨Ò¦p25/8=3.125(«½ÆµÛ¨º¨Ç¥i³Q¬Ù²¤ªº¡u0¡v)¡A¤S©ÎªÌ¬O1/7=0.14285714285714¡K¡K(«½ÆµÛ¤@²Õ¾Ö¦³¤»¦ì¼Æ¦rªº´`Àô)¡C¡u²z©Ê¼Æ¡v·íµM¹³§Ú©Ò»{ÃѪº¤j³¡¥÷¤H¡A¬O¾Ö¦³¬Y¤@ºØ¯S¦âªºÃ©w©Ê¡C¦ý¦³¤@ºØ¤H¡A¥Ã»·¤£Ä@°±¤U¨Ó¡A§¹¥þ¬O¤£¥i²z³ëªº¡A¦Ó³oºØ¤H«ê¦ü¬O¨º¨Ç¡u¤£²z©Ê¼Æ¡v
(irrational number)¡C¦Ü©ó·í¤¤ªºªíªíªÌ¡A¹ê²ö¹L©ó¦ý«Ü¿Ø¨ë¦a¡A´N¬O³o¤@ºØ¤£²z©Ê¦Ó¥O§A¶O¸Ñªº¤H³Ì¬°@¤H´M¨ý¡A©M¥LÅÊ·R©¹©¹¥i¨Ï§A¨è°©»Ê¤ß¡B»î²o¹Ú¿¢¡C
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