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请教一个数学题 快考试了麻烦大家帮忙解决
If K is an integer greater than 1,is K equal to 2^r for some positive integer r?
(1)k is divisible by 2^6
(2)k is not divisible by any odd integer greater than 1
答案是B 可是我觉得题中问的是some不是all,所以(1)也可以,我选的D 麻烦各位帮我解答~~~
还有“The farm has more than twice as many cows as it has pigs”是猪比牛的两倍还多 还是 牛比猪的两倍还多 ?
在DS题中,如果问what is ......? 给出的条件如果能算出来,但是算出来的那个数没有实际意义,比如说问人数是多少,但用所给条件算出来的数是个分数,那这个条件选吗??? |
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