A-test-consists-of-four-questions-each-of-which-contains-five-alternative-answers-one-of-which-is-correct-The-test-pass-condition-is-at-least-four-correct-answers-A-student-not-knowing-the-test-su

Question Number 133696 by Mikael_786 last updated on 23/Feb/21

A test consists of four questions

each of which contains five alternative

answers, one of which is correct .

The test pass condition is at least

four correct answers . A student, not

knowing the test subject, scored the

answers randomly . How is the

probability for the student to pass ?

Answered by Ar Brandon last updated on 23/Feb/21

{(\frac{1}{5})}^{4}