Mathematics Fsc Part 1 Online Test With Answers

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Mathematics Fsc Part 1 Online Test

Sr. # Questions Answers Choice
1 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
2 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
3 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
4 9 -9 -6 none
5 3 -3 1/3 -1/3
6 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
7 5 14 20 6
8 2 -2 5 -5
9 40 -40 26 -26
10 1 -5 -1 none
11 Minors and co-factors of the elements in a determinant are equal in magnitude but they may differ in: order position sign symmetry
12 If AB = BA = I, then A and B are: equal to each other multiplicative inverse of each other additive inverse of each other both singular
13 A-1 exists if A is: singular nonsingular symmetric none
14 zero non-singular singular none of these
15 If A is non singular matrix then At is: singular nonsingular symmetric none
16 ab - cd = 0 ac - bd = 0 ad - bc = 1 ad - bc = 0
17 diagonal matrix
18 If A and B are two matrices, then: A B = O AB = BA AB = I AB may not be defined
19 If A is a square matrix, then A - At is:
20 If A is a square matrix, then A + At is:
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