[計量] BB Test7 Sec.4 No.9,28

看板GRE (GRE入學考試)作者時間17年前 (2008/10/12 17:32), 編輯推噓0(000)
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請問一下兩題題目意思 no.9 n=7*19^3 column A:The number of distinct positive factors of n column B:10 Ans:B no.28 By weight, liquid A makes up 7.0 percent of solution I and 14.5percent of solution II. If 3 grams of solution I is mixed with 2 grams of solution II, then A accounts for what percent of the weight of the resulting solution? (A)6.09% (B)10% (C)10.75% (D)21.5% (E)50% Ans:B 謝謝解答~ -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 61.57.132.240
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文章代碼(AID): #18ySH7St (GRE)