In an examination there are three multiple choice questions and each question has choices. Number of ways in which a student can fail to get all answer correct is?
Correct Answer: Option(d)
There are 4 choices for each question. So, there
are 4 ways to answer a question.
Number of ways to answer 3 questions
Out of 64 ways there is only one way which has
all the answers correct.
So, Number of ways in which a student can fail to get all answers