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Find the probability P(prime sum when tossing 2 dice). Write in fraction form.
Please explain. Thanks
 one year ago
 one year ago
Find the probability P(prime sum when tossing 2 dice). Write in fraction form. Please explain. Thanks
 one year ago
 one year ago

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AccessDeniedBest ResponseYou've already chosen the best response.1
It would be helpful if we knew all the possible sums of the dice. I think it is easiest to use a table with numbers 16 on the top row and 16 on the left column, and just compute all the sums. Then we can easily see all the prime sums from the table. dw:1349635556005:dw
 one year ago

AccessDeniedBest ResponseYou've already chosen the best response.1
dw:1349635743681:dw Completed Table ^
 one year ago

AccessDeniedBest ResponseYou've already chosen the best response.1
dw:1349635839214:dw So, you can see all of the prime sums on the table: The probability from there is just (# of primes)/(total entries in the table)
 one year ago

sunshnee8Best ResponseYou've already chosen the best response.0
I tried that and I missed a few sums. Your table makes it more clear. Thank you. very much. So it would be 15/36 reduced into 5/12 correct?
 one year ago
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