Re: [計量] 請問CAT 11的問題
※ 引述《ipathigo (機哩呱啦)》之銘言:
: 1. If a 4-digit number is chosen at random, what is the probability that
: it will be a palindrome? (palindrome的意思是例如:33,414,2882)
: Ans : 1/100
(9*10)/(9*10*10*10) 千位不為0 只需選千位百位
: 2. Two successive discounts of 30 percent and 30 percent are equivalent to
: a single discount of p percent.
: Col A : p Col B : 49
: Ans : (A)
: 這題的p不就是70% * 70% = 49% => (C) 為什麼是(A)呢?
p=51
: 3. If the length and width of a rectangular solid are increased by 25% and
: the height is decreased by 20%, by what percent does the volume of the
: solid change?
: Ans : 25% increased
: 這題不是 5/4 * 4/5 = 1 也就是跟原面積相同 ??
5/4*5/4*4/5=5/4
: 4. Col A : The slope of a line that passes through the origin and makes a
: 30度 angle with the x-axis.
: Col B : 2/3
: Ans : (B)
Col A: 1/根號3
: 不知道要怎麼判斷 XD 感覺很簡單
: 不好意思 麻煩各位幫忙解答了
: 謝謝
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