[計量] 印度網站again~

看板GRE作者 (VICTORIA)時間16年前 (2009/05/27 22:31), 編輯推噓0(000)
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hi~我又肥來了~ Given a quadrilateral with sides 9, 9, 8 &1. Col A: Angle between the sides 9 and 9 Col B: 60 Ans: D I think the answer is wrong, right? Draw a diagonal X Since the sum of two sides is greater than the third side => 8+1> X difference of two sides is less than the third side => X>8-1 Therefore, 9>X>7, the diagonal won’t be equal to 9. the angle, hence, the angle will be less than 60 degree. Is this right? Given that heights of 60 men, 60 women both have normal distributions and if the Standard Deviation of them is 10 each, then Col A: Standard Deviation of a random sample of 30 men, 30 women Col B: 9 Ans: D If there are 'c' cartons and each carton has 'x' boxes which is being loaded in a truck in 'h' hours and 't' minutes, then Col A : The average time for loading the 'x' boxes of all cartons Col B: cx /(h+t/60) Ans: D i got the same answer as Col B ._. why isn't the answer C? -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 114.44.201.125
文章代碼(AID): #1A7KxCxR (GRE)
文章代碼(AID): #1A7KxCxR (GRE)