10: 0000 9: 00000333555555 8: 0355589 7: 02399 6: 48 5: 1*9 4: 4* 2:
Many students got complete score for this problem. Others provided one or two wrong answers. 5 points for one subproblem.
Many people got complete score for this problem. Wrong probability answer led to deduct 10 points.
A few students did not provide complete answer for this problem.
Many people did good job for this problem. Some others only provided partially correct answers.
Only a few students provided completely correct answer for the last problem.
Created by: En Cheng. Date: 2007-03-24. Last Modified by Zheng Liu, 2008-03-24.