There is a 120-choice quiz with 5 choices. From the first question, the student marks the questions as e, a, c, c, d, e, a, c, b, c, d, e... What is the probability that this student will answer 7 questions correctly in the exam?
a- 17 times b- 17 times c- 51 times d- 17 times e- 18 times
The student repeats answers every 7 times. He does the same operation 17 times and the answer to the last question is e. Already 120 = 17.7 + 1. Well, I can't figure out how to solve this question because there's a repeat. Thanks for your help.