问题详情

Nine pieces of paper numbered consecutively from 1 to 9 are put into a hat. If one piece of paper is drawn at random from the hat, what is the probability that it will have an even number？
A．1/9
B．2/9
C．4/9
D．1/2
E．5/9请帮忙给出正确答案和分析，谢谢！