document.write( "Question 1042367: Suppose an opaque jar contains 4 red marbles and 10 green marbles. The following exercise refers to the experiment of picking two marbles from the jar without replacing the first one. \r
\n" ); document.write( "\n" ); document.write( "What is the probability of getting a green marble and a red marble together? (Enter your probability as a fraction. \r
\n" ); document.write( "\n" ); document.write( "Hint: How is this exercise different from finding the probability of getting a green marble first and a red marble second?)\r
\n" ); document.write( "\n" ); document.write( "I really need help on this one if anyone is available.
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Algebra.Com's Answer #657403 by robertb(5830)\"\" \"About 
You can put this solution on YOUR website!
Let \"R%5B1%5D\" = the event that the first draw is red,
\n" ); document.write( "\"G%5B1%5D\" = the event that the first draw is green,
\n" ); document.write( "\"R%5B2%5D\" = the event that the second draw is red,
\n" ); document.write( "\"G%5B2%5D\" = the event that the second draw is green. \r
\n" ); document.write( "\n" ); document.write( "Then P(\"R%5B1%5D\"&\"R%5B2%5D\") = \"%284%2F14%29%2A%283%2F13%29+=+6%2F91\",
\n" ); document.write( "P(\"R%5B1%5D\"&\"G%5B2%5D\") = \"%284%2F14%29%2A%2810%2F13%29+=+20%2F91\",
\n" ); document.write( "P(\"G%5B1%5D\"&\"R%5B2%5D\") = \"%2810%2F14%29%2A%284%2F13%29+=+20%2F91\", and
\n" ); document.write( "P(\"G%5B1%5D\"&\"G%5B2%5D\") = \"%2810%2F14%29%2A%289%2F13%29+=+45%2F91\".\r
\n" ); document.write( "\n" ); document.write( "What we're interested at are events \"R%5B1%5D\"&\"G%5B2%5D\" and \"G%5B1%5D\"&\"R%5B2%5D\". Since these are mutually exclusive events, the probability is \"20%2F91%2B20%2F91+=+highlight%2840%2F91%29\".
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