单项选择题

The odds in favor of winning a game can be found by computing the ratio of the probability of winning to the probability of not winning．If the probability that Pat will win a game is
，what are the oddle that Pat will win the game（）

 

A.4 to 5
B.4 to 9
C.5 to 4
D.5 to 9
E.9 to 5

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单项选择题
The 4 beads in a bag are identical except that 2 are red and 2 are blue．If 2 beads are to be simultaneously and randomly selected，what is the probability that they will both be blue（）

A.A
B.B
C.C
D.D
E.E
单项选择题
The figure above shows a rectangular play area in which one child stands at B while another child runs back and forth along the entire side AD．If the running child is in a position randomly located along side AD at a given time，what is the probability that the two children are at most 50 feet apart at that time（）

A.A
B.B
C.C
D.D
E.E
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