In an examination, a student has to answer $4$ questions out of $5$ questions; Questions $1$ and $2$ are however compulsory. The number of ways in which the student can make a choice is :

6

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3

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2

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60

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Solution

The correct option is B $3$
Since the student has to answer $4$ questions out of $5$ and question $1$ and $2$ are compulsory
So only two other questions have to be answered.
The student can choose $2$ questions out of the remaining $3$ , hence the number of ways $=^{3} C_{2} = 3$

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In an examination, a student has to answer 4 questions out of 5 questions; Questions 1 and 2 are however compulsory. The number of ways in which the student can make a choice is :

The correct option is B 3Since the student has to answer 4 questions out of 5 and question 1 and 2 are compulsory So only two other questions have to be answered.The student can choose 2 questions out of the remaining 3, hence the number of ways =3C2=3

In an examination, a student has to answer $4$ questions out of $5$ questions; Questions $1$ and $2$ are however compulsory. The number of ways in which the student can make a choice is :

The correct option is B $3$
Since the student has to answer $4$ questions out of $5$ and question $1$ and $2$ are compulsory
So only two other questions have to be answered.
The student can choose $2$ questions out of the remaining $3$ , hence the number of ways $=^{3} C_{2} = 3$