[計量] prep 計量!
1.is x+y is negative?
(1) x is negative
(2) y is negative
ans:E
2.if n is a positive integer and the product of all the integers from 1 to n,
inclusive, is a multiple of 990, what is the least possible value of n?
Ans:11
3.if 2^x-2^(x-2)=3(2^13), what is the value of x?
Ans:15
4.if v ans w are different integers, does v=0?
(1) vw=v^2
(2) w=2
5. if xy>0?
(1) x-y > -2
(2) x- 2y<-6
6. if x and y are integers and x>0, is y >0?
(1) 7x-2y >0
(2) - y< x
7. are xa and y both positive?
(1) 2x-2y=1
(2) x/y > 1
8. if two sides of a trianglle have lengths 2 and 5, which of the following
could be the perimeter of the triangle?
(一) 9
(二)15
(三)19
ans : none!
阿!!!一次有好多問題!
我對數字比較大小的問題非常不會!
是不是每次都一定要帶數字阿?
我實在頭痛了我!
請大家幫我看看這幾道!大概都是prep的!然後我有搜尋過傷咖但是它沒有的!
btw, 為啥我無法搜尋cd, 不是按搜尋進去,寫出重要字即可嗎?可是我每次都無法找到耶!
怪了!
謝謝大家!
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