Hello to all,
I have an question that "In 20 questions of true false student require 8 right answer to pass to passout. What is the probability that student will fails?"
Please help me to solve this.
Thnks in advance.
Hello, rax012!
Youe grammar is strange . . .
I will assume that the student randomly guesses the answers.In a test of 20 true-false questions, a student needs at least 8 right answers to pass.
What is the probability that student will fail?
To fail, he must have less than 8 right answers.
There are 8 cases to consider . . .
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