A multiple choice actuarial paper has a choice of 5 answers (A,B,C,D) to each question. you take the paper and on four o

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A multiple choice actuarial paper has a choice of 5 answers
(A,B,C,D) to each question. you take the paper and on four of
the question you do not know the answer. you decide to randomly
guess on these four questions knowing thar you have 1 out 5 chance
to guess correctly on a single question.
- what is the expected number of correct answers on the four
that you guessed.
-what is the probability that you will guess correctly on one or
more of these four.