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)     You can put this solution on YOUR website! Each question has 3 possible answers: True, False, Blank. \n" ); document.write( "So 20 questions can be answered in |