Re: [計量] 請教幾題計量題!!!
※ 引述《applepenguin (皮)》之銘言：
: BB TEST1 P62
: 11:有一圓通過兩條線在圓內有一交點(圖)
: the areas of the two shaded regions of the circle are equal
: (A) the area of unshaded region A of the circle
: (B) the area of unshaded region of the circle B
: ANS:(D)
: 如果兩個陰影面積一樣的話不是交點就是圓心
: 所以以A和B會一樣大?
: BB TEST4 P176
: 14:d > 0
: (A)the totalinterest earned on d dollars invested for 3 months at 11 percent
: simple annual interest
: (B)(11d)/(3*100) dollars
(0.11/12)為月利率，乘以三就是存三個月的利率~再用d去乘就可以
d * (0.11/12)*3 = {(11d)/(100*12)}*3 = 11d/100*4
所以B比較大
: BB TEST7 P.292
: 29:the volume of a cylindrical tank is directly proportional to the height
: and the square of the radius of the tank. if a certain tank with a radius
: of 10 centimeters has a volume of 20,000 cubic centimeters, what is the
: volume in cubit centimeters, of a tank of the same height with a radius of
: 15 centimeters?
: ANS:45000
: BB TEST8 P.315
: 11:(A)the ratio of the lesser of two consecutive positive intergers to the
: greater
: (B)2/3
: ANS:(D)
: 想請問A的論述the lesser of ...to the greater???
兩個連續正整數，較小的那個除以較大的~
EX 2 and 3 就是2/3~
所以答案是不確定~有可能大也可能小(1/2)~
: p.319
: 30:one-kth of a circular pie has been served. if the rest of the pie is divid
: into n equal servings, then each of these servings is what fraction of the
: whole pie?
: ANS:(k-1)/nk
: 謝謝願意回答的數學高手!!
: p.s.祝大家6G成功:)
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