Re: [計量] 幾題數學
我自己看了也相當詭異
※ 引述《berrylover (看不見看不見我不要看見ꌩ》之銘言：
: ※ 引述《murai111 (明鏡止水)》之銘言：
: : 1. If x, y, z, u, v, w, t are non-zero numbers then what are the possibilites
: : for the terms not being zero if xyz = uvwt?
: 不太懂題目的意思欸
: 是說 x y z y u v w t 皆非零 則xyz = uvwt =\= 0的機率是多少?????
: : 2. Perimeter of a parallelogram is given as 360
: : Col A: length of diagnal
: : Col B: some value like root 9 *27
: ^^^^^^^^^^ 是 squar root (9) * 27的意思嗎?
Col B可能是他忘了吧 ETS怎麼可能some value like
: 又 Col A 是算兩對角線和嗎?
: : 2. If the speed of a vehicle is x/6 miles for 'y'secs
: : then the speed for Z miles is?
: : 沒給選項 是要用xyz來表達答案?
: 我想應該是 我有看過類似的題目是用符號表達答案
: : 7. When x is divided by 12, it gives a remainder of 5.
: : So what is the remainder if x^2 is divided by 9?
: : 有特定答案嗎?
: 令x=12k+5. x^2=144k^2+120k+25
: ^^^^^^ ^^
: 餘0 餘7
: 當k=1 , 120k = 9t_1+3
: k=2 , 120k = 9t_2+6
: k=3 , 120k = 9t_3+0
: thus, the possible candidates for the remainder of x^2 divided by 9 are
: 4, 7, 1
這樣答案有三個 可能就要看選項了
: : 11. If there are 33 balls arranged in 7 boxes which of th following is true.
: : (i) at laest one box has more than 5
: : (ii) there are more than one boxes with 4
: : (iii) there is atlest one box empty
: : A. I only
: : B. ii only
: : C. i and ii
: : D. i and iii
: : 不太懂...
: 33球放入7箱的放法?!....我想應該是A吧
: : 4. Given a table with some variables as ‘u’, ‘v’, ‘r’, ‘s’ & ‘t’
: : whose product is even and also it is given that product of ‘uvrs’ & ‘uvr’
: : as even and product of ‘rs’ as odd. Which of the following options
: : cannot be odd?
: : A. R
: : B. s
: : C. t
: : D. u
: : E. v
: 題目是不是打錯啊? 三個條件都沒有t耶
所以我也算不出來...
: : 5. Given six variables arithmetic mean as 80 and given first 3 has an average of 60 then asked to find
: : Col A: How many numbers of the last 3 numbers can be greater than 80
: : Col B: 3
: : 這題是說後三數中大於80會有幾個
: : 當然1-3都有可能 在於can 所以應該是選D還是C?
: 我想應該是c吧
: : 麻煩各位了...
: : Q比V的壓力還大....XD
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