document.write( "Question 1190900: Suppose that you have a barrel with 5 apples and 8 oranges in it. If 3 fruits are selected, what is the probability you select exactly 2 apples? \n" ); document.write( "
Algebra.Com's Answer #822633 by greenestamps(13200)\"\" \"About 
You can put this solution on YOUR website!


\n" ); document.write( "(1) Solving by an elementary method -- which is useful for gaining an understanding of basic probability....

\n" ); document.write( "P(apple,apple,orange) = \"%285%2F13%29%284%2F12%29%288%2F11%29+=+160%2F1716\"
\n" ); document.write( "P(apple,orange,apple) = \"%285%2F13%29%288%2F12%29%284%2F11%29+=+160%2F1716\"
\n" ); document.write( "P(orange,apple,apple) = \"%288%2F13%29%285%2F12%29%284%2F11%29+=+160%2F1716\"

\n" ); document.write( "P(2 apples and 1 orange) = \"480%2F1716+=+40%2F143\"

\n" ); document.write( "(2) Solving by a more sophisticated method of combinatorics....

\n" ); document.write( "The good outcomes are when you choose 2 of the 5 apples and 1 of the 8 oranges; the total number of possibilities is when you choose any 3 of the 13 fruits.

\n" ); document.write( "P(2 apples and 1 orange) = \"%28C%285%2C2%29%2AC%288%2C1%29%29%2FC%2813%2C3%29+=+%2810%2A8%29%2F286+=+80%2F286+=+40%2F143\"

\n" ); document.write( "
\n" ); document.write( "
\n" );