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You can put this solution on YOUR website!
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document.write( "You'll know the answer when you learn what combinations are all about.\r\n" );
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document.write( "C(N,R) is read \"Suppose you have N things and you want to choose R from them.\r\n" );
document.write( "C(N,R) equals the total number of ways there are to do that.\"\r\n" );
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document.write( "Example:\r\n" );
document.write( "C(4,3) is read \"Suppose you have 4 things and you want to choose 3 from them. \r\n" );
document.write( "C(4,3) equals the number of ways there are to do that. So C(4,3)=4, That's \r\n" );
document.write( "because if you have this set of four {a,b,c,d} You can choose these 4 ways:\r\n" );
document.write( "{a,b,c}, {a,b,d}, {a,c,d}, {b,c,d}. Leave a different one out from the 4 each\r\n" );
document.write( "time.\r\n" );
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document.write( "C(6,0) is read \"you have 6 things and you want to choose 0. How many ways are\r\n" );
document.write( "there to do that.\"\r\n" );
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document.write( "So\r\n" );
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document.write( "C(6,0) is read as: \"Suppose you have 6 things and you want to choose 0 from\r\n" );
document.write( "them. C(6,0) equals the number of ways there are to do that.\" The answer is\r\n" );
document.write( "obviously 'exactly 1 way', simply \"choose none\" which just means not to choose\r\n" );
document.write( "any! It's really a trick question because it is very obvious, yet very tricky\r\n" );
document.write( "to see that it is obvious.\r\n" );
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document.write( "Answer: 1 way, just don't choose any! So C(6,0) = 1. \r\n" );
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document.write( "[Similarly, C(6,6) also equals 1 because there is just one way to take all 6 --\r\n" );
document.write( "simply 'take all six'!. You may run into that sort of problem later.]\r\n" );
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document.write( "Edwin \n" );
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