132. L1, L2, ……….L10, 对应M1 to M10, L integer, where M is remainder of L divided by 2, ASK sum of M 1) sun of L = 100 2) six of L is even ANS: B 怎么做的,不明白.多多指教.
137. ASK median may be which of the following, >40 16.5%, >35中>40占33.33% I) 34 II) 35 III) 36 A) I B) I and II C) II and III D) I, II and III E) None ANS: B 题干怎么看不懂,后半句什么意思?
145. right triangle OAB, O is (0,0), B (x, 0) and A (x,y), 角AOB=30度, OA长为1(* No use of this condition, may be let some stupid guy to calculate the number of x and y ???), ask y/x ANS: 3^(1/2)/3 偶认为答案应加上正负号才对. 大家以为如何?
86) 12 104) 78 108) D 110) C 114) 30% 115) C 116) 0.02 125) chose -2 137) can not understand question, who can tell me what's the meaning of it? 139) there must be some other requirements... 149) the question did't tell us the ratio is between 2nd have no major and what????
the above are some of my opinions, welcome consult together
以下是引用howardlc在2003-11-17 23:58:00的发言: sorry..确实不同,不过我再算一次还是1/5 设总人数=60 1st=30, no major=30*4/5=24, major=6 2nd=30, major=3*6=18, no major=12 所以2nd have no major占总人数=12/60=1/5