[計量] 再請教一題 CAT計量
不好意思小弟又有一題計量問題請教版上高手
[有爬文 沒有人問過]
Test 7
16.
If one number is chosen at random from the first 1,000 positive integers,
what is the probability that the number chosen is an integer of both
perfect square and cube?
A) 1/1000
B) 1/500
C) 3/1000
D) 1/250
E) 1/200
=======
ANS: C
我用硬推的可以算出三個數字是 1 64 729
不過想請教這類型的題目正確的計算方式。 還是就是硬湊?!
再次感謝 Orz..
再補一題請教
同樣是 Test 7
4.
Column A Column B
--------- ---------
The number that is as
much greater than 63 as 84
it is less than 101
Ans: B
------
請問左邊這個該怎麼解釋?
是 63~101之間的"數"有多少?
[ 63 64... 101 ] = 38個數
還是 63~101之間的"數字"有多少?
[ 6 3 6 4 6 5 ....] = 78個數字
還是我解釋通通都錯?!
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※ 編輯: hsnu920 來自: 114.32.78.150 (08/17 20:34)
※ 編輯: hsnu920 來自: 114.32.78.150 (08/17 20:43)
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08/17 22:38, , 9F
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