Determinants - Online Test
Q1. The roots of the equation det. 
Answer : Option D
Explaination / Solution:
Expanding along C1
Q2. If , then the value of 
Answer : Option D
Explaination / Solution:
Q3. 
then equals
then equals
Answer : Option C
Explaination / Solution:
Because , the determinant of a skew symmetric matrix of odd order is always zero and of even order is a non zero perfect square.
Q4. If the entries in a 3 x 3 determinant are either 0 or 1 , then the greatest value of this determinant is :
Answer : Option C
Explaination / Solution:
Greatest value = 2 .
Q5. 
Answer : Option D
Explaination / Solution:
Q6. The determinant 
is equal to
is equal to
Answer : Option A
Explaination / Solution:
(Since C1 =0)
(Since C1 =0)
Q7. If 1/a+1/b+ 1/c = 0 , then 
Answer : Option C
Explaination / Solution:
Q8. A determinant is unaltered , if
Answer : Option C
Explaination / Solution:
This is because of the elementary transformations of determinants . The value of determinant remains unaffected by applying elementary transformations.
Q9. 
Answer : Option D
Explaination / Solution:
Q10. 
then B is given by
then B is given by
Answer : Option A
Explaination / Solution:
