数学狗: 1.(x2-4)(x+6)/(x-2)<0,问满足此条件的x有多少个? 2. 有w个workers, each is sent to one of three departments. If w is divided by 3, the remainder is 1. 问how to distribute the workers to the three departments? 答案选 (w-1)/3、(w-1)/3、(w+2)/3 3. DS:n is a positive integer. 问n的值? 条件1:n is the tenth digit of decimal 1/n 条件2:n is the hundredth digit of decimal 1/n LZ 选D 4. DS:有三个正数,问是否最小的数< 12000 条件1:这三个数的mean=16000(数值不确定) 条件2:这三个数的median=18000比mean大2000 LZ选 B 5. Sn=1/n2-1/n, 问S1+S2+S3? 6. f(x)=f(1-x), 问f(1+x)=? 7. k4是32的倍数. 问k被32除的余数可能是? (I) 2(II) 4(III) 6 LZ选II only 8. DS:某产品的cost为C,C=10000+bx+ax2, 求a 条件1:生产?件(数值忘了)的花费为?(数值忘了) 条件2:生产1000件的cost比生产500件的cost的两倍多?(数值忘了) LZ选B
AI: A powerful business leader is more influential on the course of a community or a nation that does any government official.
AA: 一个生产流行服装的公司,因为其前5年的销售额一直增加,所以决定开its own store,把衣服放在自己的店卖。Director 觉得因为他们的产品是hot product,management is pursuing expansion,再加上公司的CEO是former rock star,所以觉得公司的扩张计划一定会成功。