ExoticInspirit
  • ExoticInspirit
In probability what is the difference between finding the product and the sum of a number. For example, I roll 2 dice numbered 1-6 what is the probability that i get a product of 12? another question for sum is i roll two dice numbered 1-6 what is the probability i get the sum of 3?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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Sachintha
  • Sachintha
@ganeshie8
ganeshie8
  • ganeshie8
How many total possible outcomes are there when you roll 2 dice ?
ExoticInspirit
  • ExoticInspirit
36

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More answers

ganeshie8
  • ganeshie8
Good, first consider sum of digits = 3
ganeshie8
  • ganeshie8
it can happen in two ways : 1 + 2 2 + 1 so 2 outcomes are in favor, whats the probability ?
Sachintha
  • Sachintha
1/9 ?
ExoticInspirit
  • ExoticInspirit
i know the probability of the sum of 3 would be 1/18 but i dnt know the difference between product and sum and why do they have to subtract 1 to make it 2/36 instead of 3/36 and just simplify
ganeshie8
  • ganeshie8
are you saying the probability for sum being 3 is 1/18 ?
ExoticInspirit
  • ExoticInspirit
yep
ganeshie8
  • ganeshie8
thats correct, next work the probability for product = 12 how many ways it can happen ?
ExoticInspirit
  • ExoticInspirit
ok i know the answer i just dont the why they wrote sum and product what is the DIFFERENCE
ganeshie8
  • ganeshie8
could you please elaborate a bit more, i feel i don't understand ur question properly..
ExoticInspirit
  • ExoticInspirit
whats probability of product
ganeshie8
  • ganeshie8
how many ways can you get a product of 12 ?
ganeshie8
  • ganeshie8
2*6 3*4 4*3 6*2 4 favorable outcomes, yes ?
ExoticInspirit
  • ExoticInspirit
is that another way i can find that out besides making a table! OH YEAH THANKS A LOT and it is 4
ganeshie8
  • ganeshie8
yes you could also make a table if that is not obvious
ganeshie8
  • ganeshie8
so the probability for getting product of 12 is 4/36
ExoticInspirit
  • ExoticInspirit
i know just couldnt figure out another way wow i feel so dumb
ExoticInspirit
  • ExoticInspirit
then simplified to 1/9
ganeshie8
  • ganeshie8
Looks good!
ExoticInspirit
  • ExoticInspirit
so hows this going to help me see the difference
ganeshie8
  • ganeshie8
not really sure what the question is asking exactly
ExoticInspirit
  • ExoticInspirit
when you draw the table of possible outcomes lets say is the difference that the sum table has no probability of getting a one and the product table does like this |dw:1434390963140:dw|
ganeshie8
  • ganeshie8
Ahh right, the sum can not be 1 because the minimum sum is 2
ExoticInspirit
  • ExoticInspirit
ohh ok so that is one of the rules for probability
ganeshie8
  • ganeshie8
not rule as such, its just a trivial fact..
ExoticInspirit
  • ExoticInspirit
oh ok thanks thats all i needed :)
ganeshie8
  • ganeshie8
np:)

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