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1. 说是买了10台电脑,每台购价为c,卖以每台p的价格卖了其中的8台(p>c),另外2台以购入价的120%出售。问利润占成本的比率。 (1)p-c=8,反正等于一个具体的数字,记不清了 (2)p=1.2c,记得很清楚。 应该选b,注意问的是利润率,不是利润,差点没选错。 I think its D 2. What is the percent of people born in X city? (1) 40% of male resident of the city is not born in the city. (2) 60% of female resident of the city is born in the city. I choose C, 这个题也差点没选错,有陷阱题中。 NN, please advise, I think its E 4. 说一个大于1000的4位整数,10位与千位数字为偶数,个位与百位为odd number, 问有多少可能这样的数。选的是500, 记得很清楚。 4*5*5*5 |