# Mathematics For Economic Analysis Set 4

This set of Mathematics for Economic Analysis Multiple Choice Questions & Answers (MCQs) focuses on Mathematics For Economic Analysis Set 4

Q1 | If matrix A is comfortable for multiplication the (AB)T is equal to
Q2 | If A is a square matrix of order ‘n’ and I is the unit matrix of the same order,then AI is equal to
Q3 | The signed minor of the matrix A is called
Q4 | The determinant of a matrix and that of its transpose are
Q5 | If two rows or columns of a determinant A are identical, then the value of the determinant is School of Distance Education Mathematics for Economic Analysis (II Semester) Page 12
Q6 | If every element of a raw or column of a square matrix A is zero, then the value of the determinant is
Q7 | If each element of a raw or column is a sum of two elements, the determinant can be expressed as the
Q8 | A square matrix A such that A2 = A is called
Q9 | If A& B are symmetric matrix, then AB – BA is
Q10 | The transpose of the cofactor matrix is called
Q11 | For any square matrix A of order ‘n’, A(Adj A) is equal to
Q12 | If AΠ B = Ø , then A and B are called
Q13 | Matrix multiplication does not satisfy --------- law
Q14 | Y= a0+a1X is a function
Q15 | Relation between two numbers or variables are called
Q16 | If B is a subset of A , then A is a -------- of B
Q17 | the elements in the horizontal line in a matrix is called
Q18 | If matrix A is of mxn dimension, then At will be --------- dimension
Q19 | If A=At , then A is
Q20 | Given S1={a,b,c}S2={a,1,2}, then (S1-S2) Π (S2-S1) is
Q21 | The set of “stars in the sky” is an example of
Q22 | Ordered pairs of two sets are called
Q23 | AB=BA=I, then B is said to be -------- matrix of A
Q24 | Determinant of triangular matrix is the product of
Q25 | If IAI=24. then the determinant of its transpose is