单项选择题

A certain jar contains 100 jelly beans：50white，30 green，10 yellow，5 red，4purple，and 1 black．If a jelly bean is to be chosen at random，what is the probability that the jelly bean will be neither purple nor red（）

A. 0.09
B. 0.11
C. 0.55
D. 0.91
E. 0.96

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单项选择题
The numbers 3，10，17，24，31，and 38 are the first six terms of an infinite sequence inwhich each term after the first is 7 greater than the preceding term．What is the 45thterm of the sequence（）

A. 308
B. 311
C. 312
D. 315
E. 318
单项选择题
LEAGUE RESULTS According to the incomplete table above．If each of the 6 teams in the league played each of the other teams exactly twice and there were no ties．How many games did team X win(Only 2 teams play in a game．)（）

A. 4
B. 5
C. 6
D. 7
E. 10
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