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Maths question for you all . . .


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Posted

I'm confused.

国内生产总值到2020年力争比2000年翻两番

So lets say 国内生产总值 in 2000 is 100. In 2020, they are aiming for

a) 200

B) 400

c) 3.14

d) some apples

Roddy

Posted

B)

In other words, they are aiming for a GDP growth rate of 7-8% -- doube once every 10 years, double twice in 20 years.

Posted

I think it should be 300

“番”与“倍”

增加一倍,就是增加100%; 翻一番,也是增加100%。除了一倍与一番相当外,两倍与两番以上的数字含义就不同了。而且数字越大,差距越大。如增加两倍,就指增加200%;翻两番,就是400%(一番是二,二番是四,三番就是八),所以说翻两番就是增加了300%,翻三番就是增加了700%。“番”是按几何级数计算的,“倍”是按算术级数计算的。

  计算翻番公式为:

  n=[lg(报告期数÷基期数)]÷lg2

  n表示翻番数 lg是常用对数符号

Posted

That's the trouble with multiple choice exams. The right answer isn't always one of the options!

Posted
I think it should be 300

翻两番,就是400%(一番是二,二番是四,三番就是八),所以说翻两番就是增加了300%,翻三番就是增加了700%。“

:conf

100*400%=....

100+100*300%=....

Posted

I think it is 300.

基數 = 100

翻一番 = 100 + (100 x 1) = 200

翻兩番 = 100 + (100 x 2) = 300

Go to a 四方城 if you want a 三番. :mrgreen:

Posted
增加一倍,就是增加100%; 翻一番,也是增加100%。除了一倍与一番相当外,两倍与两番以上的数字含义就不同了。而且数字越大,差距越大。如增加两倍,就指增加200%;翻两番,就是400%(一番是二,二番是四,三番就是八),所以说翻两番就是增加了300%,翻三番就是增加了700%。“番”是按几何级数计算的,“倍”是按算术级数计算的。

Jenny's method and reasonning are correct, I dont know why she got a seemed incorrect answer. 8)

Posted
基數 = 100

翻一番 = 100 + (100 x 1) = 200

翻兩番 = 100 + (100 x 2) = 300

it's

增加一倍 = 100 + (100 x 1) = 200

增加两倍 = 100 + (100 x 2) = 300

翻一番 = 100 x 2 = 200

翻兩番 = 100 x 2² = 400

翻三番 = 100 x 2³ = 800

...

:wink:

Posted

Come on, let's do this in English, otherwise I won't be able to understand 啰

Posted

Let me bring an off topic question, Sky, I dont know why all the traditional chinese sites use to use the 楷书 as default font, personally i have no difficulty to read trad-chinese, but I feel 楷书 really makes my eyes easily being tired. What do you feel about it? Don't you agree 等线体 or 宋体 is easily being recognized? :-? of coz, it's not your fault, :wink::mrgreen: thank you!

Posted

I AM CONFUSED NOW!

基數 = 100

翻一番 = 100 + (100 x 1) = 200

翻兩番 = 100 + (100 x 2) = 300

Isn't this right?

Posted

hehe, i dont mean that, i just want to know you feeling about it, seems to me all the sites in trad-chin are like that, does that mean you guys feel comfortable about the font? Sites use 楷书 to me more like arabic sites, it drives me crazy... :cry:

Posted
I AM CONFUSED NOW!

基數 = 100

翻一番 = 100 + (100 x 1) = 200

翻兩番 = 100 + (100 x 2) = 300

Isn't this right?

It's not right, BB! :mrgreen: 这样也没"翻"啊!See my post above. :D

Posted

Go and start your font topic elsewhere, Mr 39! I still haven't got my answer

Roddy

PS :wink:

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