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数学大部分的jj都碰到了,没有碰到比较简单。但是还是有些变体。
1. An=1-1/n+1, 问A99是多少? answer: 1/100.
此题与那个答案是1/100!类似。 考试的时候注意。
2. 有一个数列, 是否知道a15/a10是多少?
(1) a10/a5=5
(2) An=2An-1
answer: B
3. 数列An=An-1+5, 问A99+1 是否可以被10 整出
(1) A100+1 能够被5整出 (2)A1=-1
好像选B。忘了,不好意思。
4. the distance between longest corners in the rectangle plastic sheet is 12, one of length is 8, the other edge is most closed to __. answer: 9
5. a 单独做每小时400ton, a 和 b 同时干了一件3000ton的事情用了2.5 小时,问b 的速度: 800
一到逻辑题是: frog 一般生活在temporary pools in the rain forests, but now most of rain forests are cleared to be replaced by pasture where contains many permanent pools, which provide better conditions for frogs, therefore, the cleaning of rain forests can not be of extinct.
Weaken: predators of frogs perfer to live in the permanent pools. |
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