ECAT Mathematics MCQ's Test For Full Book With Answers

ECAT Mathematics MCQ's Test For Full Book

Sr. # Questions Answers Choice
1 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
2 If A is a non singular matrix then A-1= ______
3 16 None of these
4 If A is singular then |A| = ______ 1 0 2 None of these
5 0 1 -2 10
6 1, 2, 3 1, 5, 9 2, 5, 8 3, 6, 9
7 Null matrix Triangular matrix Unit matrix Rectangular matrix
8 Diagonal matrix Scalar matrix Triangular matrix Identity matrix
9 Diagonal matrix Scalar matrix Triangular matrix Identity matrix
10 Diagonal matrix Scalar matrix Triangular matrix Identity matrix
11 If A is any matrix then its additive inverse is A A<sup>-1</sup> A<sup>t</sup> -A
12
13 The transport of a rectangular matrix is a Square matrix Rectangular matrix Row matrix Column matrix
14 The transport of a square matrix is a Row matrix Column matrix Square matrix Null matrix
15 The transport of a null matrix is Row matrix Column matrix Square matrix Null matrix
16
17 Two matrices A and B are conformable for the product AB if Both A and B are square Both A and B are symmetric Number of rows of A = number of columns of B Number of columns of A = number of rows of B
18 3 x 1 1 x 3 3 x 3 1 x 1
19 In order of A is m x n and order of B is n x p then order of AB is m x m n x n m x p p x m
20 Square matrix Row matrix Symmetric matrix Null matrix
21 Hermitian matrix Skew-hermitian matrix Symmetric matrix Identity matrix
22 Identity matrix Diagonal matrix Null matrix Hermitian matrix
23 A square matrix A for which At= -A is called a Column matrix Symmetric matrix Skew-symmetric matrix Row matrix
24 A square matrix A for which At= A is called a Column matrix Symmetric matrix Skew-symmetric matrix Row matrix
25 Scalar matrix Identity matrix Null matrix Symmetric matrix
26 A diagonal matrix in which the diagonal elements are equal is called a Null matrix Identity matrix Scalar matrix Row matrix
27 A square matrix all of whose elements except the main diagonal are zeros is called a Null matrix Singular matrix Symmetric matrix Diagonal matrix
28 A matrix with a single column is called Column matrix Row matrix Identity matrix Null matrix
29 A matrix with a single row is called a Column matrix Row matrix Null matrix Identity matrix
30 A matrix in which the number of rows is equal to the number of columns is called a Diagonal matrix Rectangular matrix Square matrix Scalar matrix
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