[計量] 4題PP

看板GMAT (GMAT入學考試)作者 (Wanda 火箭)時間17年前 (2007/12/20 21:07), 編輯推噓0(000)
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In the rectangular coordinate system shown above, does the line K not shown intersect quadrant2 (-,+)那個象限? 1. The slope of K is -1/6 2. The y-intercept of k is -6 Ans: A 我的問題:斜率是-1/6,但線可以移來移去,為什麼選項1就可以得證? In a certain deck of cards, each card has a positive integer written on it. In a multiplication game, a child draws a card and multiplies the integer on the card by the next larger interger. If each possible product is between 15 and 200, 卡片上最小和最大的整數應該是? A. 3&15 B. 3&20 C. 4&13 D. 4&14 E. 5&14 Ans: C 希望有人可以解釋這題是如何計算的 A vending machine is despense 8 ounces of coffee into a cup. 標準差 0.3 ounce,以下12個數有幾個在1.5標準差以內 7.51 8.22 7.86 8.36 8.09 7.83 8.30 8.01 7.73 8.25 7.96 8.53 A) 4 B) 6 C) 9 D) 10 E) 11 Ans: E 可是我算的過程是 7.55~8.45 之間,所以排除7.51和8.53。所以我選D 想請問我的想法哪裡出問題了呢? For all positive m f(m)= 3m when m is odd f(m)=1/2m when m is even which of the following is f(9)*f(6) Ans: 27 我的想法:f(9)*f(6) = 3*9 * (1/2)*6 = 81 和解答不合 想請問我的想法哪裡出問題了呢? -- 我是箭:http://www.wretch.cc/blog/princearthas I am Wandahttp://WandaRocket.deviantART.com/ -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 61.62.16.34
文章代碼(AID): #17Qcaif- (GMAT)
文章代碼(AID): #17Qcaif- (GMAT)