# XII_Maths_Matrices and Determinants_3 Online Test

  this system of equations has ____.
Infinite solution
No solution
Unique solution
None of the above
In a skew symmetric matrix, the diagonal elements are all ____.
Different from each other
Zero
One
None of the above
If I is a unit matrix, then 3I is ____.
A unit matrix
A triangular matrix
A scalar matrix
None of the above
The system of equations   and  has ____.
No solution
Exactly one solution
Infinite solutions
None of the above
The value of  if  is ____.
0
1
– 1
None of the above
If  and   then the value of  is ____.
1/3
½
1
2


Both A and R are true and R is correct explanation of A
Both A and R are true and R is not correct explanation of A
A is true, R is false
A is false, R is true
Given 2x –y +2z =2, x –2y +z =-4, x+ y +(z =4 then the value of ( such that the given system of equation has NO solution, is
3
1
0
-3
Consider the set A of all determinants of order 3 with entries 0 or 1 only. Let B be the subset of A consisting of all determinants with value 1. Let C be the subset of A consisting of all determinants with value –1. Then
C is empty
B has as many elements as C
A = B ( C
B has twice as many elements as elements as C
Description:

This test consist of 10 questions.Students should ideally take 10 minutes to complete the test. This test is useful for those students who are preparing for IIT JEE, AIEEE or any other engineering entrance test. This test consist of questions from Matrices and Determinants which, in general, is focused in AIEEE and IIT JEE. Last year 3 questions asked from this chapter in AIEEE. In Matrices and Determinants, Elementary operations are key topics and mostly application based questions are asked.

Discussion

same questions are repeated in the online test of matrices

2218 days 5 hours 31 minutes ago

:)

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