document.write( "Question 490692: Mary purchased a package of 18 different plants, but she only needed 15 plants for planting. In how many ways can she select the 15 plants from the package to be planted?\r
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document.write( "How do I do this? Could I have some help? \n" );
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Algebra.Com's Answer #334312 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! Her 1st choice is 1 of 18, then 1 of 17, etc \n" ); document.write( "--> 18*17*16...5*4 \n" ); document.write( "= 18!/3! \n" ); document.write( "= 1,067,062,284,288,000 ways \n" ); document.write( " |