SSLC Maths English Medium - Matrices One Mark Questions Online Test

Maths - Matrices

Maths - Matrices

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1. Which one of the following statements is not true?
   1.   A scalar matrix is a square matrix
   2.   A diagonal matrix is a square matrix
   3.   A scalar matrix is a diagonal matrix
   4.   A diagonal matrix is a scalar matrix.
2. Matrix A=[a_ij ]_{mX n} is a square matrix if,
   1.   m < n
   2.   m > n
   3.   m = 1
   4.   m = n
3. If then the values of x and y respectively are
   1.   –2 , 7
   2.   -1/3 , 7
   3.   -1/3 , -2/3
   4.   2 , -7
4. If A = ( 1 -2 3 ) and then, A + B =
   1.   ( 0 0 0 )
   2.   
   3.   ( -14 )
   4.   not defined
5. If a matrix is of order 2 X 3 then the number of elements in the matrix is
   1.   5
   2.   6
   3.   2
   4.   3
6. If then the value of x is
   1.   1
   2.   2
   3.   1/4
   4.   4
7. If A is of order 3 x 4 and B is of order 4 x 3, then the order of BA is
   1.   3 X 3
   2.   4 X 4
   3.   4 X 3
   4.   not defined
8. If then the order of A is
   1.   2 X 1
   2.   2 X 2
   3.   1 X 2
   4.   3 X 2
9. If A and B are square matrices such that AB = I and BA = I , then B is
   1.   Unit matrix
   2.   Null matrix
   3.   Multiplicative inverse matrix of A
   4.   -A
10. If then the values of x and y respectively, are
    1.   2 , 0
    2.   0 , 2
    3.   0 , -2
    4.   1 , 1
11. If and A + B = O, then B is
    1.   
    2.   
    3.   
    4.   
12. If then A ²is
    1.   
    2.   
    3.   
    4.   
13. A is of order m X n and B is of order p X q, addition of A and B is possible only if
    1.   m = p
    2.   n = q
    3.   n = p
    4.   m = p, n = q
14. If then the value of a is
    1.   8
    2.   4
    3.   2
    4.   11
15. If is such that A ²= I then
    1.   1 + α² + βγ = 0
    2.   1 - α² + βγ = 0
    3.   1 - α² - βγ = 0
    4.   1 + α² - βγ = 0
16. If A = [a_ij ]_{2 X 2} and a_ij = i + j then, A =
    1.   
    2.   
    3.   
    4.   
17. then the values of a, b, c and d respectively are
    1.   -1, 0, 0, - 1
    2.   1, 0, 0, 1
    3.   -1,0,1,0
    4.   1, 0, 0, 0
18. Ifand then the matrix B =
    1.   
    2.   
    3.   
    4.   
19. Ifthen the value of x is
    1.   7
    2.   -7
    3.   1/7
    4.   0
20. Which one of the following is true for any two square matrices A and B of same order?.
    1.   (AB)^T= A ^T B ^T
    2.   (A^TB)^T= A ^TB^T
    3.   (AB) ^T = B A
    4.   (AB)^T = B^T A^T