...of the consecutive integers from 91 to 100，inc...

优质解答

1.

看了上面的答案 咱先翻译一下题目吧.

S是91到100(不重复)的倒数的和.

S=1/91+1/92+...+1/100>1/100+1/100+...+1/100=1/10

故S>1/10.

S=1/91+1/92+...+1/100<1/91+1/91+...+1/91=10/91

故S<10/91

联立得 1/10

即：1/10

所以比S小的是 1/10.选C.

2.

24R-6R=60S-30S

18R=30S

18R/30=S

100S=100x18R/30=60R

选D .

其他回答

1.

1/91+1/92...+1/100<10 x 1/91=10/91<10/90=1/9<1/8

所以S小于1/9，也就小于1/8

1/91+1/92...+1/100>10 x 1/100=1/10

所以S大于1/10

所以答案选C

2.

24R-6R=60S-30S

18R=30S

18R/30=S

100S=100x18R/30=60R

答案D

其他类似问题

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你们这帮人 翻译它干吗?LZ我来帮你.

depends on assumptions 这种题型 就是补全推理

原题的推理：program failure in 1987 如果successful =》price of most illegal drugs

原题的逻辑是 price of most illegal drugs 绝定因素是 program.

E说的就是这个逻辑,说他因（ A drop in demand wholesale price.

明白了吧,B是迷惑选项.

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你题目有漏吧?

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when n litres of fuel is added

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数学满分 语文错八个 730左右

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