Re: [計量] The integer 33 is to be ...
※ 引述《Hide0916 (紅)》之銘言：
The integer 33 is to be express as a sum of n consecutive positive integers.
A B
The number of possible 2
value of n
Ans: A
我用硬算的大概可以得知n可以為 2 (16+17) or 3 (10+11+12)
但總是覺得這方法不聰明 有沒有甚麼簡單的方法呢??
In Town X, 64 percent of the population are employed, and 48 percent of the
population are employed males. What percent of the employed people in Town X
are females?
a. 16%
b. 25%
c. 32%
d. 40%
e. 52%
Ans: B
我的解讀是：一個小鎮裡有64%的人口被雇用，而人口的48%是被雇用的男性，那自然
被雇用的女性不就是 64% - 48% = 16% 嗎????
為什麼答案是B呢???
Each of the following numbers has one digit blotted out. Which of the
numbers CANNOT be a sum of two consecutive odd integers?
a. 2_24
b. 3_32
c. 4_44
d. 5_54
e. 6_68
Ans: D
這則是完全不會阿...................
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◆ From: 140.117.21.18
※ 編輯: Hide0916 來自: 140.117.21.18 (12/20 21:37)
推
12/20 21:37,
12/20 21:37
※ 編輯: Hide0916 來自: 140.117.21.18 (12/20 21:38)
→
12/20 21:39,
12/20 21:39
推
12/20 21:45,
12/20 21:45
→
12/20 21:46,
12/20 21:46
但是 7+7 也可能個位數是4阿....
ex: 54 = 27+ 27
推
12/20 22:00,
12/20 22:00
為什麼要用4呢???
推
12/21 10:38,
12/21 10:38
→
12/21 10:39,
12/21 10:39
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◆ From: 140.117.134.198
推
12/24 20:42, , 1F
12/24 20:42, 1F
推
12/24 22:49, , 2F
12/24 22:49, 2F
→
12/24 23:05, , 3F
12/24 23:05, 3F
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