[問題]GWD 2-4

[blacklilu]

What is the hundreds digit of the integer z?
(1) 10z = 93,120
(2) z rounded to the nearest hundred is 9,300.

想請問 (2) ... :-$

Ans : A

[marco]

(2)9300是四捨五入後的結果,也就是他可能為9300~9349則百分位為3...可是也有可能為
9250~9299經四捨五入,變成9300,則百分位為2,故(2)不正確

[chris8888]

yeah, rounded to the nearest hundred.

怎知道他是進位還是捨去? 對吧