Solutions | JEE Main and Advanced Preparation | Unacademy

Chapter 7 in NCERT Mathematics - Class 11

Permutations And Combinations

5 exercises

42 questions

Exercise 7.1

Page 138

Question 1

3 mins

Question 2

2 mins

Question 3

2 mins

Question 4

2 mins

Question 5

2 mins

Question 6

2 mins

Exercise 7.2

Page 140

Question 1

2 mins

Question 2

2 mins

Question 3

47 secs

Question 4

2 mins

Question 5

3 mins

Exercise 7.3

Page 148

Question 1

56 secs

Question 2

2 mins

Question 3

2 mins

Question 4

3 mins

Question 5

2 mins

Question 6

54 secs

Question 7

4 mins

Question 8

2 mins

Question 9

3 mins

Question 10

6 mins

Question 11

9 mins

Exercise 7.4

Page 153

Question 1

2 mins

Question 2

5 mins

Question 3

2 mins

Question 4

52 secs

Question 5

2 mins

Question 6

2 mins

Question 7

2 mins

Question 8

58 secs

Question 9

2 mins

Miscellaneous Exercise on Chapter 7

Page 156

Question 1

2 mins

Question 2

2 mins

Question 3

6 mins

Question 4

4 mins

Question 5

2 mins

Question 6

3 mins

Question 7

3 mins

Question 8

2 mins

Question 9

3 mins

Question 10

3 mins

Question 11

3 mins