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



 

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