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You randomly guess the answers on a multiple choice test each question has three choices what is the probability that you will guess the correct answer

User Walterra
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1 Answer

1 vote

Answer:

If the question is single answer correct then the answer is
(1)/(3) and if it's multiple options correct than the answer is
(1)/(7)

Explanation:

There is a little ambiguity in the question, that whether one answer is correct or multiple options are correct, but let;s deal with both the cases.

Probability =
(TotalNo.OfFavourableOutcomes)/(TotalOfNoOfOutcomes)

Probability when one option is right=
(1)/(3)

If this is a question , where multiple options are right then the total no. of cases for it will be = TTT, TFF, FTF, FFT, TTF, TFT, FTT (FFF is not a valid case, because the question has to have at least one valid answer.)

Probability when more than one option can be right=
(1)/(7)

User Sadegh Teimouri
by
8.9k points

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