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- 2009-4-11
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- 1970-1-1
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1.If the drama club and music club are combined,what percentage of the combined membership will be male?
(1) Of the 16 members of the drama clubs,15 are male. (2) Of the 20 members of the music club,10 are male. 我觉得这道题一看就是C啊,为什么答案是E呢? 2.K是正整数,K是一个整数的平方吗? (1)K能被4整除 (2)K is divisible by exactly four different prime numbers. 选E,为什么B不对呢? 3.x,y为正整数,x=8y+12 x,y最大公因子是多少? (1)x=12u,u为整数 (2)y=12z,z为整数 选B,实在摸不着头脑 4.t>0,r是t^2+5t+6除以7的余数,r是多少? (1)t除以7余6 (2)t^2除以7余1 选A,又是道余数的题,还是搞不懂 5.Does the integer k have a factor p such that 1<p<k? (1)k>4! (2)13!+2<=k<=13!+13 答案是B 在线等解答~~谢谢 |
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