1. k+j+m=705 is k.j.m median=average? (1) k=235 (2)j=10-m 注意705/3刚好=235 选a! 2.f(x)=x^2-px+36 p=? (1)f(r1)=0,f(r2)=0, r1*r2=36 (2)(x-3)is a factor of f(x) 3. theratio of 0.025 to 5 4.telephone number 那题 一组telephonenumber有7digit 前3 digit确定为921, 总共需多少组telephoneset 才能包含282000个电话号码 (也就是一set 有10*4=10000种组合,282000/10000=28.2 选29个set) 5. 1 percent=100 basis point 收committeefee 从 35% oftotal asset改成40% oftotal asset. total asset; 247 million 问: 大约可以多收多少? (数字可能不对但意思差不多是这样) 6. 一直线 l 斜率m, x截距a ,y截距b,问直线l是否过原点(0,0)? (1) a=b (2) m<0 7. [(1/X^2) -(1/Y^2)]/(XY)^-1=? 选 (y-x)(y+x)/xy 8. Buy 100D 和150G totalcost共15500 Average unit cost per D is 30 more than averagecost per G gross profit is 60% of cost 问 what’sthe average price for one d and one g? ANS: d=80 ,g=50 ;(80+50)*1.6=208 9.比大小 根号5/2 , 根号2/根号5 ,根号5/根号2, 根号2/5, 2/根号5 最大的是? 10. 补充jj上某道题 whatis the volume of the rectangular box ? (1) the 4 lateral(是侧面的意思)parts are 200 (2) the top of the rectangularbox is a square with an area of 400 11. x+y>1/2? (1) x>1/4 (2) y>1/4 其他的和jj重复就不再说了 感谢cd!!
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