11th Class FSC Mathematics Chapter 3 Test Online With Answers

11th Class FSC Mathematics Chapter 3 Test Online

Sr. # Questions Answers Choice
1 25 20 40 2a + 2b + 2c
2 If A is a square matrix order 3 × 3 the |kA| equals: k |A| k<sup>2</sup>|A| k<sup>3</sup> |A| k<sup>4</sup> |A|
3 For a square matrix A, |A| equals: A<sup>t</sup> |A<sup>t</sup>| -|A<sup>t</sup>| -A<sup>t</sup>
4 If A = [aij], B = [bij] and AB = 0 then: A = 0 B = 0 either A = 0 or B = 0 A &amp; B not necessarily zero
5 If A = [aij] and B = [bij] are two matrices of same order r × s, then order of A - B is: r - s r × s r + s none of these
6 The trivial solution of the homogeneous linear equations is: (1, 0, 0) (0, 1, 0) (0, 0, 1) (0, 0, 0)
7 If a matrix A is symmetric as well as skew symmetric, then: A is null matrix A is unit matrix A is triangular matrix A is diagonal matrix
8 scalar matrix diagonalmatrix triangularmatrix none of these
9 scalarmatrix diagonalmatrix lower triangularmatrix uppertriangularmatrix
10 scalar matrix diagonalmatrix lower triangularmatrix upper triangularmatrix
11 If A is a square matrix, then: |A<sup>t</sup>| = A |A<sup>t</sup>| = -A |A<sup>t</sup>| = |A| A<sup>t</sup>= A
12 If any two rows of a square matrix are interchanged, the determinant of the resulting matrix: is zero is multiplicative inverse of the determinant of the original matrix is additive inverse of the determinant the original matrix none of these
13 If each element in any row or each element in any column of a square matrix is zero, then value of the determinant is: 0 1 -1 none of these
14 9 -9 -6 none
15 3 -3 1/3 -1/3
16 If two rows (or two columns) in a square matrix are identical (i.e. corresponding elements are equal), the value of the determinant is: 0 1 -1 ±1
17 5 14 20 6
18 2 -2 5 -5
19 40 -40 26 -26
20 1 -5 -1 none
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