A multiple choice examination has 5 questions. Each question has three alternative answer…

Mathematics · JEE Main · NTA ExamsStatistics and Probability

A multiple choice examination has 5 questions. Each question has three alternative answer of which exactly one is correct. The probability that a student will get 4 or more correct answers just by guessing is:
  1. \(\frac{17}{3^{5}}\)
  2. \(\frac{13}{3^{5}}\)
  3. \(\frac{11}{3^{5}}\)
  4. \(\frac{10}{3^{5}}\)

Answer

(A) 17 3^ 5

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