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OpenStudy (anonymous):
Probability: In how many different ways can a 10 question true-false test be answered if every question must be answered?
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OpenStudy (nurali):
each question 2 choices => 2*2* 2*2*2*2* 2*2*2*2 = 2^10 = 1024
OpenStudy (anonymous):
all right, thanks ! :)
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