document.write( "Question 963993: Here's the question:
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document.write( "A baseball team has 15 members. Five of the players are pitchers, and the remaining 10 members can play any position. How many different teams of 9 players can be formed?\r
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document.write( "I know this will be a Combination because order doesn't matter, but I don't know where the pitchers and normal players come in. How many pitchers are required to be on the team?
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document.write( "I know that if the pitchers and normal players don't matter, the answer is simply 15C9. But do the pitchers matter? \n" );
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Algebra.Com's Answer #588931 by Theo(13342)![]() ![]() You can put this solution on YOUR website! 9 players are on the field at one time. \n" ); document.write( "there is 1 pitcher, 1 catcher, 3 outfielders and 4 infielders, for a total of 9. \n" ); document.write( "i believe you have to make that assumption. \n" ); document.write( "so each team will have 1 pitcher and 8 other members on the team.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "order doesn't matter.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the number of different possible 9 member teams should be:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "(5c1) * (9c8) = 45.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "look at this in a much smaller type problem and you can see how it works.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "assume 2 pitchers and 4 other players.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "assume 3 man teams of 1 pitcher and 2 other players.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "number of possible teams should be 2c1 * 4c2 = 12\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "let the pitchers be a and b \n" ); document.write( "let the other players be 1 and 2 and 3 and 4.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the possible 3 man teams are:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "a12, a13, a14, a23, a24, a34 \n" ); document.write( "b12, b13, b14, b23, b24, b34\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "each team has 1 pitcher and 2 other players. \n" ); document.write( "each team is different.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the formula is shown to work for the smaller problem.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "good chance it will work for the bigger problem.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "5c1 * 9c8 = 45\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "5c1 = combination formula of 5! / (1! * 4!) = 5\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "9c8 = combination formula of 9! / (8! * 1!) = 9\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "5 * 9 = 45\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |