In chapter 3 Pair of linear equations class 10 Exercise 3.1, Question 1 is important. All questions in Exercise 3.2 are important. In Exercise 3.3, Question 1 (parts iv, v, vi), Question 2, and Question 3 are important. Exercise 3.4's Question 2 is important, and Exercise 3.5's Questions 2 and 4 are important. All questions in Exercise 3.6 are important. All questions in the optional Exercise 3.7 are important. Students can download a pair of linear equations in two variables class 10 pdf.