This quiz has 20 questions, with 4 answer choices each, and only one of the choices is right. What is the probability to get exactly 50% of the quiz right by selecting answers completely at random?

This quiz has 20 questions, with 4 answer choices each, and only one of the choices is right. What is the probability to get exactly 50% of the quiz right by selecting answers completely at random?

This quiz has 20 questions, with 4 answer choices each, and only one of the choices is right. What is the probability to get exactly 50% of the quiz right by selecting answers completely at random?



  1.     0.00332
  2.     0.0025
  3.     0.025
  4.     0.00992