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Mathematics 21 Online
OpenStudy (anonymous):

What is the probability of getting five multiply choice questions answered correctly, if for each question the probability of answering it correctly is 1/3?

OpenStudy (anonymous):

Would I need to know the probability of getting a question wrong( i think its 67/100), in addition to using the special product rule of probability, in order to solve this?

OpenStudy (anonymous):

Look at this way 1/3 is the probability of getting each question right now getting a question right or wrong is independent of each other so the multiplicative law would be used so total probability of getting each question right would be 1/243=(1/3)^5

OpenStudy (anonymous):

okay that makes since now. Thankyou.

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