document.write( "Question 692369: a history teacher gives a 20 question true false exam. in how many ways can the test be answered if the possible answers are true or false or possible to leave the answer blank \n" ); document.write( "
Algebra.Com's Answer #426976 by partha_ban(41)\"\" \"About 
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Each question has 3 possible answers: True, False, Blank.
\n" ); document.write( "So 20 questions can be answered in \"20%5E3\" possible ways.
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