document.write( "Question 1119387: In how many ways can one invite one or more of her seven friends to a party? \n" ); document.write( "
Algebra.Com's Answer #734925 by Edwin McCravy(20056)\"\" \"About 
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document.write( "There are 2 decisions that can be made concerning friend #1, invite \r\n" );
document.write( "friend #1 or don't invite friend #1. That's 2 ways.\r\n" );
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document.write( "There are 2 decisions that can be made concerning friend #2, invite \r\n" );
document.write( "friend #2 or don't invite friend #2. That's 2 ways.\r\n" );
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document.write( "There are 2 decisions that can be made concerning friend #3, invite \r\n" );
document.write( "friend #3 or don't invite friend #3. That's 2 ways.\r\n" );
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document.write( "There are 2 decisions that can be made concerning friend #4, invite \r\n" );
document.write( "friend #4 or don't invite friend #4. That's 2 ways.\r\n" );
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document.write( "There are 2 decisions that can be made concerning friend #5, invite \r\n" );
document.write( "friend #5 or don't invite friend #5. That's 2 ways.\r\n" );
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document.write( "There are 2 decisions that can be made concerning friend #6, invite \r\n" );
document.write( "friend #6 or don't invite friend #6. That's 2 ways.\r\n" );
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document.write( "There are 2 decisions that can be made concerning friend #7, invite \r\n" );
document.write( "friend #7 or don't invite friend #7. That's 2 ways.\r\n" );
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document.write( "Answer = 2∙2∙2∙2∙2∙2∙2 = 27 = 128 ways.\r\n" );
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document.write( "Edwin
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