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标题: 请教GWD-2-4关于四舍五入的疑问 [打印本页]

作者: 游魂    时间: 2005-10-1 06:25     标题: 请教GWD-2-4关于四舍五入的疑问


Q4:

What is the hundreds digit of the integer z?

(1) 10z = 93,120

(2) z rounded to the nearest hundred is 9,300.

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

D. EACH statement ALONE is sufficient.

E. Statements (1) and (2) TOGETHER are NOT sufficient.

请问(2) z rounded to the nearest hundred is 9,300.是什么意思啊?把Z四舍五入到9300的百位?比如说9304四舍五入到百位就变成饿9300,9295变成9300,是这个意思吗?好奇怪啊~~~麻烦哪位XDJM给我这笨脑袋点拨一下~~


作者: huahua115    时间: 2005-10-1 18:56

条件2是四舍五入的意思~lz理解的对的~
作者: 游魂    时间: 2005-10-1 19:46

谢谢楼主~比如说9304四舍五入到百位就变成饿9300,9295变成9300,我说的这个没错啊?真是好奇怪的说法~~


作者: himba    时间: 2005-10-2 07:53

在一般的计算题中,你的理解是对的,但在相关的应用中,四舍与否与五入与否就要具体情况具体对待了!
作者: grasses    时间: 2005-10-8 06:10

agree!!![em08]




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