SOLUTION: what is the probability of getting 3 true or false questions right..and i need a sample space or tree diagram

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Question 448503: what is the probability of getting 3 true or false questions right..and i need a sample space or tree diagram
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi 

what is the probability of getting 3 true or false questions right

 Sample space is 2^3 = 8

       T            F

     T    F       T   F

    T F  T F     T F  T F

TTT,TTF,TFT,TFF,FTT,FTF,FFT,FFF    P(making correct choices) = 1/8



OR

 1/2*1/2*1/2 = .5^3 =  1/8