[計量] GWD-8 三題求救
< 9 >
If an interger n is to be chosen at ramdon from the integers 1 to 96,
inclusive, what is the probablity that (n+1)(n+2) will be divisible by 8?
Ans: 5/8 (我怎麼算都是3/8 = =)
< 29 >
The annual rent collected by a corporation from a certain building was x
percent more in 1998 than in 1997 and y percent less in 1999 than in 1998.
Was the annual reant collected by the corporation from the building more in
1999 than in 1997?
(1) x > y
(2) xy/100 < x-y
Ans: B (但是答案用粗體還標了星號,不知道是不是爭議題)
< 32 >
If m and v are integers, what is the vaule of m + v?
(1) mv = 6
(2)( m + v)平方= 25
Ans:E (我選C, m,v一個為2一個為3,不知道哪裡錯了,請指點!!)
請大家幫忙, 謝謝!!
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