标题: 数学几道···· [打印本页] 作者: saiko13 时间: 2010-10-29 21:00 标题: 数学几道···· A store purchased a Brand c computer for the same amount that it paid for a brand D computer and then sold them both at a high prices. The store's gross profit on the Brand C computer was what percent greater than its gross profit on the brand D computer? (1) the price at which the store sold the brand c computer was 15% greater than the price at which the store sold the brand computer (2) the store's gross profit on the brand d computer was $300
For each positive integer n, the integer n* is defined by n*=n^2+1, what is the value of the positive integer k? (1) when k is divided by 4, the remainder is 1 (2) 18<=k<=36 选B