1. Matrix algebra is a means of efficiently expressing large numbers of calculations to be made upon ordered sets of numbers. It is used primarily to facilitate mathematical expression. Matrix algebra

2. The prices of three commodities P, Q and R are given by tk 20, tk 25 and tk 15. Represent them in the Matrix form.

3. Matrix algebra There are two families A and B. There are 4 men, 6 women and 2 children in family A. On the other hand, there are 2 men, 2 women and 4 children in family B. Represent the above information by Matrix notation.

4. Matrix algebra A company has one head office and two sub-offices in a town. There are one Head Clerk, two Clerks and one Peon in each office. In addition, there are one Manager in the head office and one Cashier in each sub- office. Represent the above information by Matrix notation.

5. Matrix algebra

7. Mr. X is manufacturing Chairs and Tables. A Chair requires 3 labour hours and 5 units of material whereas each Table requires 5 labour hours and 8 units of material. If Mr. X plans to produce 15 Chairs and 5 Tables, how many labour hours will need to work and how much material will he require? Use Matrix algebra.