In an examination there are three multiple choice questions and ea | Filo
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Class 11

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Co-ordinate Geometry

Straight Lines

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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)
Solution:
There are 4 choices for each question. So, there
are 4 ways to answer a question.

Number of ways to answer 3 questions

                
question  

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
correct

             
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