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标题: About Math!(a simple question) [打印本页]

作者: cheeyoung 时间: 2002-10-17 16:30 标题: About Math!(a simple question)

PS: Both a and b are positive number. a/b and a-b are all even number. Which of the below is odd number?
answer is : a+2/2

Why?

作者: zyh79 时间: 2002-10-17 16:48

a-b,even==>b,even
because b,even and a/b,even
a=4 is multiplier of 4.
so a/2 even,1+a/2 odd

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