document.write( "Question 1162926: There are 4 green blocks and 3 red blocks in a bag. What’s the probability of selecting three blocks of the same color randomly without replacement? \n" ); document.write( "
Algebra.Com's Answer #786836 by Edwin McCravy(20055)\"\" \"About 
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document.write( "There is only 1 way to select three red blocks, which is to select them all.\r\n" );
document.write( "There are 4 ways to select 3 green block, because when you select 3 green\r\n" );
document.write( "blocks, you leave 1 green block behind, and there are 4 ways to leave 1\r\n" );
document.write( "green block behind.\r\n" );
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document.write( "So there are 1+4 = 5 ways to selecting 3 blocks of the same color out of\r\n" );
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document.write( "[7 blocks CHOOSE 3] = 7C3 = 35 ways\r\n" );
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document.write( "So 5 successful ways out of 35 is a probability of 5/35 or 1/7.\r\n" );
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document.write( "Edwin
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