Using the property of determinants and without expanding in Exercises 1 to 7, prove That  
Using the property of determinants and without expanding in Exercises 1 to 7, prove That  
Using the property of determinants and without expanding in Exercises 1 to 7, prove That  
Using the property of determinants and without expanding in Exercises 1 to 7, prove That  
Using the property of determinants and without expanding in Exercises 1 to 7, prove That  
 
 
By using properties of determinants, in Exercises 8 to 14, show that:  
 
 

 
 
 
 
 
 
Question 15.Let A be a square matrix of order 3 × 3, then  kA is equal to (A) k A (B) k2  A (C) k3  A (D) 3k  A   
Question 16. Which of the following is correct? (A) Determinant is a square matrix. (B) Determinant is a number associated to a matrix. (C) Determinant is a number associated to a square matrix. (D) None of these  