Maths I (Commerce) class 11 Video lesson Explanation 1. Sets and Relations Exercise 1.1 Q.1 – Q.4Exercise 1.1 Q.5 and Q.6Exercise 1.1 Q.7 – Q.10Exercise 1.1 Q.11 and Q.12Exercise 1.2 Q.1 and Q.2Exercise 1.2 Q.3 – Q.5 3. Complex Number Exercise 3.1 Q.1 and Q.2Exercise 3.1 Q.3, Q.4 and Q.5Exercise 3.1 Q.6, Q.7 and Q.8Exercise 3.1 Q.9 Exercise 3.2 Q.1Exercise 3.2 Q.2Exercise 3.2 Q.3Exercise 3.2 Q.4Exercise 3.3 Q.1Exercise 3.3 Q.2Exercise 3.3 Q.3 and Q.4Exercise 3.3 Q.5