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討論串[計量] 好多題計量請教
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M=0.3*Q=0.3*(0.2*P)=0.3*(0.2*(2N))=0.12N M/N=0.12=3/25. ab-a-b=(a-1)(b-1)-1<0 因為a-1<1 b-1<1 所以ab<a+b. ab+c是偶數=奇+奇 or 偶+偶. 總共的選擇: 5*5*5=125. 假如是奇奇,則abc
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1. If M is 30% of Q, which in turn is 20% of P, and N is 50% of P, then the. ratio of M to N is. (A) 3/250. (B) 3/25. (C) 1. (D) 6/5. (E) 4/3 ANS:(B).
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↑此算法完全正確. 應是108-(2/5X+X) = X. A is subtracted from B 意為 B-A. 另"減"之正確拼法為subtract，不是substract. Column A和B各自乘以2，變成2X-17和2X-34. 因2X-17 > 2X-34，所以答案A. inte
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1. Column A Column B. The sum of the units. digit of all the 25. possible squre of. integers. ANS:A. 2. △ABC is an isosceles triangle with two sides o
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