document.write( "Question 1107368: ​Pamela's computer printer allows for optional settings with a panel of four ​on-off switches in a row. How many different settings can she select if at least one switch must be on? \n" ); document.write( "
Algebra.Com's Answer #722408 by addingup(3677)\"\" \"About 
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She can choose switch 1, or switch 2, or switch 3, or switch 4 = 4 possible selections \n" ); document.write( "
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