[計量] 兩題資料充分性
1. A rectangular lot 120 feet long by 80 feet wide
is to be partitioned into 10 rectangular gardens. If
each of the gardens will have the same dimensions.
How many feet og partitioning will be needed to
seperate the gardens?
(1) One of the dimensions of each garden is to be 40
feet.
(2) One of the dimensions of each garden is to be 24
feet.
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答案 D
我認為只有的一個條件成立而已
第二個為什麼也成立？
﹍﹍﹍﹍﹍﹍﹍﹍﹍﹍﹍﹍﹍﹍﹍﹍﹍﹍﹍﹍﹍﹍﹍﹍﹍﹍﹍﹍﹍﹍
2 What is the value of x?
(1) x^4+x^2+1=1/x^4+x^2+1
(2) x^3+x^2=0
____________________________________________________________
答案 a
可是第二個答案不是可以算出 ｘ=-１
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