Math, asked by mallikarjun5, 1 year ago

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...

Answers

Answered by Alfanjo
10
Here's the correct answer..
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Answered by wifilethbridge
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

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