document.write( "Question 142201: Please help me.\r
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Algebra.Com's Answer #103533 by Edwin McCravy(20060) $\"\"$ $\"About$

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Please help me.
\n" ); document.write( "What is the probability of rolling a 4 or a 9 on fair dice?
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document.write( "(Probability of rolling a perfect square)\r\n" );
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document.write( "Here are all the ways a pair of fair dice can be rolled:\r\n" );
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document.write( "(1,1) (1,2) (1,3) (1,4) (1,5) (1,6)\r\n" );
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document.write( "(2,1) (2,2) (2,3) (2,4) (2,5) (2,6)\r\n" );
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document.write( "(3,1) (3,2) (3,3) (3,4) (3,5) (3,6)\r\n" );
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document.write( "(4,1) (4,2) (4,3) (4,4) (4,5) (4,6)\r\n" );
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document.write( "(5,1) (5,2) (5,3) (5,4) (5,5) (5,6)\r\n" );
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document.write( "(6,1) (6,2) (6,3) (6,4) (6,5) (6,6)\r\n" );
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document.write( "That is the sample space.  There are 36\r\n" );
document.write( "outcomes in that sample space.\r\n" );
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document.write( "Now I will go through and color the ones\r\n" );
document.write( "red which have sum 4 or 9.\r\n" );
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document.write( "(1,1) (1,2) (1,3) (1,4) (1,5) (1,6)\r\n" );
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document.write( "(2,1) (2,2) (2,3) (2,4) (2,5) (2,6)\r\n" );
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document.write( "(3,1) (3,2) (3,3) (3,4) (3,5) (3,6)\r\n" );
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document.write( "(4,1) (4,2) (4,3) (4,4) (4,5) (4,6)\r\n" );
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document.write( "(5,1) (5,2) (5,3) (5,4) (5,5) (5,6)\r\n" );
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document.write( "(6,1) (6,2) (6,3) (6,4) (6,5) (6,6)\r\n" );
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document.write( "There are 7 throws out of the 36 that have sum 4 or 9.  \r\n" );
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document.write( "7 successful ways out of 36 possible ways gives a probability\r\n" );
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document.write( "Edwin

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