# A five-question quiz is taken in which the first and second questions have four answer choices, the third and fourth questions have three answer choices, and the last question has five answer choices. If a student randomly marks an answer for each question, what is the expected number of questions he will answer correctly?

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## Question:

A five-question quiz is taken in which the first and second questions have four answer choices, the third and fourth questions have three answer choices, and the last question has five answer choices. If a student randomly marks an answer for each question, what is the expected number of questions he will answer correctly?

A. 0.27B. 0.96C. 1.00D. 1.37​

The expected number of questions answered correctly in the quiz of five questions is 1.37.

Given that

Q1  has 4 choices

Q2  has 4 choices

Q3 has 3  choices

Q4 has 3  choices

Q5 has 5  choices

Assuming that only one option is correct for  each question

Then the probabilities for choosing correct options for Questions = If a student randomly marks an answer for each question, what is the expected number of questions answered correctly 