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Mathematics 15 Online
OpenStudy (anonymous):

suppose you roll 2 dies find probability of not rolling a sum of 8

geerky42 (geerky42):

How many outcomes of a roll that sum up to be 8?

OpenStudy (anonymous):

1+7 7+1 2+6 6+2 4+4 5+3 3+5 , so 7

OpenStudy (anonymous):

, so 28/36

OpenStudy (anonymous):

and that simplifies to 7/9 ..... am I right? i sure hope so, because It took me this long to figure this all out

OpenStudy (anonymous):

@Jesstho.-. @Lyrae

OpenStudy (anonymous):

@jdoe0001

OpenStudy (anonymous):

@ganeshie8

OpenStudy (kropot72):

The number of dots on a die usually ranges from 1 up to a maximum of 6. The sample space has 36 possible combinations of numbers. These can be set out in column form as follows: 6,6 5,6 4,6 3,6 2,6 1,6 6,5 5,5 4,5 3,5 2,5 1,5 6,4 5,4 4,4 3,4 2,4 1,4 6,3 5,3 4,3 3,3 2,3 1,3 6,2 5,2 4,2 3,2 2,2 1,2 6,1 5,1 4,1 3,1 2,1 1,1 This table shows 5 pairs that sum up to 8. Therefore the probability of not rolling a sum of 8 is given by: \[\large \frac{36-5}{36}=you\ can\ calculate\]

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