Question

In an examination there are 3 MCQs and each question has 4 choices number of ways in which a student can fail to get all answers correct is a)11 b) 12 c) 27 d)63 along with solution please answer this question...

Answer 1

Here's the correct answer..
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Answer 2

Answer:

63

Step-by-step explanation:

Given :In an examination there are 3 MCQs and each question has 4 choices

To Find :Number of ways in which a student can fail to get all answers correct is ?

Solution :

Total questions = 3

Each question has 4 options

So, Total no. of ways of answering questions = $4^3 = 64$

No. of ways of answering correct = $1 \times 1 \times 1 = 1$

So, Number of ways in which a student can fail to get all answers correct  = 64-1 = 63

Hence Number of ways in which a student can fail to get all answers correct  is 63