1) X>-12 If X = -10 the equation is 4 = 4 If x = 0 then the equation is 0 < 4
2) X < -6 If X = -10 the equation is 4 = 4 If x = - 12 the equation is -4 < 4
I think the answer is E.作者: tomatoshirt 时间: 2012-8-16 02:49
1. 10个人一共捐28件东西,捐的数量的range是2,问捐3件东西的人的数量可能是:
I. 0 ii. 5 iii. 9
If the range is 2 then, 10 people can donate 1 ~ 3 gifts, 2 ~ 4 .... so on ...
I. 6 people donate 2 gifts each, then 4 people donate 4 gifts each = 0 people donate 3 gifts II. 28 - 15 (3 people / 5 gifts each) = 13 gifts ... I don't think you can distribute 13 gifts among 5 people III 3 x 9 = 27 +1