document.write( "Question 131298This question is from textbook Prealgebra and Introductory Algebra
\n" ); document.write( ": Given a pair of dice, what is the probability of the event of rolling a sum of 12 on one roll of the dice? formula P( E )= n/s \n" ); document.write( "
Algebra.Com's Answer #95832 by josmiceli(19441)\"\" \"About 
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To think about it, just roll one die. How many different
\n" ); document.write( "ways can it come up? You can get 1,2,3,4,5, or 6 , so
\n" ); document.write( "6 different ways. Suppose it comes up 3. Now roll the 2nd die.
\n" ); document.write( "It can come up 6 different ways also, so there are 6 ways that
\n" ); document.write( "the 2nd die can combine with the 3 on the 1st die. Now add up
\n" ); document.write( "all the possibilities
\n" ); document.write( "1st -- 2nd
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\n" ); document.write( "1 ---- 6 ways
\n" ); document.write( "2 ---- 6 ways
\n" ); document.write( "3 ---- 6 ways
\n" ); document.write( "4 ---- 6 ways
\n" ); document.write( "5 ---- 6 ways
\n" ); document.write( "6 ---- 6 ways
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\n" ); document.write( "total 36 ways
\n" ); document.write( "So, there are 36 ways to roll 2 dice. Some look the same, but they
\n" ); document.write( "are different, like 3 and 4 on 1st roll, 4 and 3 on 2nd roll
\n" ); document.write( "How many ways can you get 12 with 2 dice?
\n" ); document.write( "There is only 1 way, 6 and 6, so the probability of
\n" ); document.write( "rolling a 12 is \"1%2F36\"
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