document.write( "Question 1142828: In how many ways is it possible to select one or more letters from those in INSIPIDITY?\r
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Algebra.Com's Answer #763552 by Edwin McCravy(20054)\"\" \"About 
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In how many ways is it possible to select one or more letters from those in
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document.write( "It doesn't matter that there are 4 I's in INSIPIDITY.  We can only select\r\n" );
document.write( "the letters I,N,S,P,D,T,Y. [The fact that there are 4 I's would affect the\r\n" );
document.write( "probability of selecting I, but does not affect the number of possible\r\n" );
document.write( "selections.]\r\n" );
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document.write( "We can choose to include I in our selection or not include it.  \r\n" );
document.write( "That's 2 ways -- include it or not include it in the selection.\r\n" );
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document.write( "We can choose to include N in our selection or not include it.  \r\n" );
document.write( "That's 2 ways -- include it or not include it in the selection.\r\n" );
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document.write( "We can choose to include S in our selection or not include it.  \r\n" );
document.write( "That's 2 ways -- include it or not include it in the selection.\r\n" );
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document.write( "We can choose to include P in our selection or not include it.  \r\n" );
document.write( "That's 2 ways -- include it or not include it in the selection.\r\n" );
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document.write( "We can choose to include D in our selection or not include it.  \r\n" );
document.write( "That's 2 ways -- include it or not include it in the selection.\r\n" );
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document.write( "We can choose to include T in our selection or not include it.  \r\n" );
document.write( "That's 2 ways -- include it or not include it in the selection.\r\n" );
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document.write( "We can choose to include Y in our selection or not include it.  \r\n" );
document.write( "That's 2 ways -- include it or not include it in the selection.\r\n" );
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document.write( "So the answer is 2×2×2×2×2×2×2 = 27 = 128 ways.\r\n" );
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document.write( "Edwin
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