Re: [計量] 最後的印度數量提問!
首先真的是很感謝您一直以來踴躍點閱我的問題,however,
本節目未提供答題換獎品的獎勵._.
只能對您說聲謝謝!然後幻想著您旁邊有人對您灑鮮花~YA~!~!~!
咳咳...回到正題,對於您的答案有些不懂,想再請教。
以下:
※ 引述《eadanlin (=口=)》之銘言:
: ※ 引述《KRZYSZ (VICTORIA)》之銘言:
: : 又要麻煩大家了!
: : Given a big square, in which 16 small squares were inscribed. The small ones
: : which had only 1 side covered with perimeter of big square was shaded. If n
: : is the number of such small shaded squares in a big square(n>4), then find
: : the actual number of small squares within a big square?
: : A. 4(n-4)
: : B. 4(n-2)
: : C. 2(n-4)
: : D. 2(n-2)
: : & so on......
: : (something like this)
: : Ans: A
: : 這題我沒算出、雖然有劃出16個大小不全相同的小正方形,
: : 但從我畫出的圖去算n和共有多少個小正方形的答案卻不在選項中
: : Given a ladder of length 5mts and it is displaced i.e slanted downwards, such
: : that it falls 'x' mts in height and horizontal length increases by 'y' mts.
: : Col A: x
: : Col B: y
: : Ans: B
: : 說一樓梯原貼著牆,後滑出去了,問降低的高度與底部滑出的長度
: : 可以告訴我以數學式子解釋為何?
: 我覺得是D也
: 請問答案的來源是?
我也認為是D,那答案應該錯了吧。答案是從遠在印度跟我們一樣的朋友們找來的~
: : There are 28 men in a room in that 14 men are selected out of which 7 are
: : under 50years
: : Col A: Percentage of men under 50
: : Col B: 40%
: : 題意是28人中挑14人,而這14人中有7人under 50years?
: 沒錯
: 所以A最大(14+7)/28=75%
: A最小7/28=25%
: Ans:D
不好意思,我還是不太懂您的思考,
為何最大(14+7)/28 中14+7? 不是說這14人中有7人under 50years
那從何推演出有最大(14+7)?
: : Given two circles of equal size and the distance between their centers is 12.
: : If the two circles coincide each other & distance between their edges is 4,
: : then find the area of any one of the circle?
: : 既然兩相同圓重疊,又哪來的凌edge(找不到那個菱的字…..)?
: : Given a function f which is defined for each positive three digit integer 'n'
: : as f(n) = (2^x)*(3^y)*(5^z), where x, y and z are hundreds, tens and units
: : digits of n, respectively. If m and v are three-digit positive integers such
: : that f(m) = 9f(v), then what is the value of m - v?
: : A. 8
: : B. 20
: : C. 19
: : & so on.......
: : 從f(m) = 9f(v)去看(2^x)*(3^y)*(5^z)來求m, v 可是在設完Xv,Yv,Zv,Xm,Ym,Zm我還是
: : 沒找出上面方程式提供的線索
: 9=3^2
: 所以v的十位數比m的十位數少2
: Ans:B
還是不懂.... ._.
m=100*Xm+10*Ym+Zm v=100*Xv+10*Yv+Zv
(2^Xm)*(3^Ym)*(5^Zm)=9*(2^Xv)*(3^Yv)*(5^Zv)
而9=3^2的觀念是用在哪?
而所以v的十位數比m的十位數少2
: : What is the value of 10^2 - (1/10^4) + 2^4 - (1/2^4)?
: : 請問這題有甚麼撇步比較快求解?
: : 我沒看出有甚麼特殊結
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