Question 482879
A history teacher gives a 24 question T-F exam. In how many different ways can the test be answered if the possible answers are T or F, or possibly to leave the answer blank. 
Thanks for the help that you have given me!
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1st question: 3 ways
2nd question: 3 ways
etc.
24th question: 3 ways
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Ans: 3^24 = 2.8243x10^11 ways
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Cheers,
Stan H.