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probability dice help

gcoughlan11 · 2013-04-28 21:14:12

two dices are rolled, find probability that the sum is equal to 4.? help doing this please

28-04-2013 9:14pm

#1

gcoughlan11

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two dices are rolled, find probability that the sum is equal to 4.?

help doing this please

0

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#2 28-04-2013 9:52pm

Yakuza

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We can't give out answers directly, but can provide hints
How many ways can you throw two six-sided dice? Call this A.

How many ways can you make 4? (1+3, 3+1, 2+2) Call this B. (If it helps, think of one die being red and the other one green, so you can see that 1+3 is different from 3+1 when looking at the totals)

B/A is your answer (as a decimal, multiply it by 100 to give a percentage if you prefer).

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#3 28-04-2013 10:04pm

gcoughlan11

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cheers thanks

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#4 28-04-2013 10:17pm

feargale

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20% probability

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#5 28-04-2013 10:20pm

UmmCadburys

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8.33%

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#6 28-04-2013 10:21pm

feargale

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UmmCadburys wrote: »

8.33%

Split the diifference? Say 13.16%? :-)

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#7 28-04-2013 11:05pm

locum-motion

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gcoughlan11 wrote: »

two dices are rolled, find probability that the sum is equal to 4.?

help doing this please

Just BTW, one of them is called "a die".
Two of them are called "two dice".

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