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标题: GWD 7-14 card drawing [打印本页]

作者: Hannah    时间: 2006-3-22 23:56     标题: GWD 7-14 card drawing

Anybody has asked this question before? WHo can help me? Thanks!

Q14:

Six cards numbered from 1 to 6 are placed in an empty bowl. First one card is drawn and then put back into the bowl; then a second card is drawn. If the cards are drawn at random and if the sum of the numbers on the cards is 8, what is the probability that one of the two cards drawn is numbered 5 ?

A.1/6

B. 1/5

C. 1/3

D. 2/5

E. 2/3






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