Question

In an examination there are three multiple choice questions and each question has 4 choices. No. of ways in which a student can fail to get all answer correct is

Answer 1

Given that there are 3 multiple choice questions and each question has 4 choices.

= 4^3

= 64.


Number of Ways of getting all the correct answers = 1^3 = 1.

Number of ways of getting all the incorrect answers = 64 - 1

                                                                                        = 63.


Thus the probability that the student can fail to get all answer correct is 63.


Hope this helps!

Answer 2

Hey!

The answer is (64-1)=63.