ECAT Pre General Science Mathematics Chapter 5 Matrics and Determinants Online Test With Answers

image
image
image

ECAT Pre General Science Mathematics Chapter 5 Matrics and Determinants Online Test

Sr. # Questions Answers Choice
1 -a -b -c 1 0 -1
2
3
4 Cofactor of an element aijis defined by (-1)<sup>i+j</sup>|A| (-1)<sup>i+j</sup>M<sub>ij</sub> (-1)<sup>i+j</sup>M<sup>-1</sup> None of these
5 Minor of an element aijis denoted by M<sub>ij</sub> A<sub>ij</sub> |A| None of these
6 0 1 2 3
7 2 4 6 8
8 The additive inverse of a matrix A is None of these
9 The transpose of a zero matrix is a ______ Column matrix Zero matrix Row matrix Scalar matrix
10 The transpose of a row matrix is a ______ Zero matrix Diagonal matrix Column matrix Row matrix
11 The transpose of a column matrix is a ______ Zero matrix Diagonal matrix Column matrix Row matrix
12 Zero matrix Diagonal matrix Column matrix Scalar matrix
13 3 x 2 2 x 3 3 x 3 2 x 2
14
15 If the matrices A and B are conformable for multiplication then (AB)t= ______ AB A<sup>t</sup>B<sup>t</sup> B<sup>t</sup>A<sup>t</sup> A<sup>t</sup>B
16 An upper triangular matrix A lower triangular matrix A diagonal matrix A null matrix
17
18 If order of A is m x n, then order of Atis m x m n x n m x n n x m
19 Matrices are represented by Natural numbers Real numbers Small letters Capital letters
20 At -A A A-1
21 The number of non zero rows in echelon form of a matrix is called Order of matrix Rank of matrix Row operation None of these
22 If A is a non singular matrix then A-1= ______
23 16 None of these
24 If A is singular then |A| = ______ 1 0 2 None of these
25 0 1 -2 10
26 1, 2, 3 1, 5, 9 2, 5, 8 3, 6, 9
27 Null matrix Triangular matrix Unit matrix Rectangular matrix
28 Diagonal matrix Scalar matrix Triangular matrix Identity matrix
29 Diagonal matrix Scalar matrix Triangular matrix Identity matrix
30 Diagonal matrix Scalar matrix Triangular matrix Identity matrix
Download This Set
×