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A pair of fair dice is thrown independently three times. The probability of getting a score of exactly 9 twice is ?

A pair of fair dice is thrown independently three times. The probability of getting a score of exactly 9 twice is ?

Grade:12

2 Answers

GOPI
36 Points
7 years ago
Fair dice thrown three times......so total 216 possibilities.Total possible ways of getting 9 twice is only 7.Probability=7/216 observe these: 6+6+6 7+5+6 7+6+5 6+5+7 5+6+7 5+7+6 6+5+7 ................reply please...!
GOPI
36 Points
7 years ago
sorry................. Total 120 possibilities. The maximum possiblity to get 9 twice is only(6+6+6). So I have total 6 dies so total six 6 numbers. so 6p3.......120. please reply

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