Question: 1. A student is taking a MCQ test having 10 questions. Each question is worth 10 (Ten) marks and has five choices, out which only

1. A student is taking a MCQ test having 10

1. A student is taking a MCQ test having 10 questions. Each question is worth 10 (Ten) marks and has five choices, out which only one is correct. Since the student did not study at all so he is selecting answers absolutely randomly, i.e., by guessing. What is the probability that: 1) He will be able to guess at most questions correctly. II) At most 4 answer will be wrong. III He will get A - Grade, if A - Grade starts from 80% IV) What is the mean number of questions, he will be able to answer (guess) correctly. (Non-anonymous question o)

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