以下是引用weimingosi在2008-12-8 11:25:00的发言:agree with you a 0.003 and b correctly priced 概率的就是12*0.75^11*0.25 我在上海考的 试卷是2020和2121 OMG, I just knew that we are not getting the same questions! I took the test in Toronto, 1010 in the morning and 1111 in the afternoon. |