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Chapter No1.MCQ's for Math 9Matrices and Determinants.(1)Multiple choice questions.Page no sr.No McQ. No2 1 The idea of matrices was first given by a) Newton b) Al Razi c) Arthur cayley d) Einstein 2 2 Arthur cayley developed “Theory of matrices ” in a) 1858 b) 1860 c) 1864 d) 18652 3 is a a) matrix b) determinant c) Transpose d) inverse of matrix3 4 Vertical entries of a matrix called a) Columns b) Rows c) Transpose d) inverse of matrix3 5 The order of is a) 1*3 b) 2*3 c) 3*3 d) 4*34 6 The order of F=[2] Is a) 1*1 b) 1*2 c) 2*1 d) 2*24 7 IS the following matrix are equal A a) Yes b) No c) Both d) none of them 5 8 A matrix whose number of rows equal to its columns called a) Row matrix b) Null matrix `c) Square matrix d) none of them 5 9 [3] is called a a) Square matrix b) Null matrix c) Column matrix d) none of them 5 10 [1 2 3] is a a) Rectangular matrix b) zero matrix c) column matrix d) none of them 5 11 Interchanging of rows into column of a matrix called a) Adjoin of matrix b) Transpose of a matrix c) inverse of a matrix d) none of them 6 12 A square matrix “A” said to be skew symmetric if a) At=A b) At= -A c) Both of them d) None of them 7 13 is a a) scalar matrix b) identity matrix c) Diagonal matrix d) square matrix 7 14 is a a) scalar matrix b) identity matrix c) Diagonal matrix d) null matrix7 15 Transpose of F= is a) b) c) d) none of them21 16 If the determinant of a matrix is zero then matrix is a) non singular b) singular c) inverse d) adjoint21 17 is a matrix a) singular b) non-singular c) inverse d) none of them21 18 Interchanging the diagonal entries and changing the sign of other entries of matrix called of matrix a) transpose b) inverse c) Addition d) Adjoin21 19 The Adjoint of A= is a) b) c) d) 22 20 The determinant of M= is a) ad-bc b) ad+bc c) ab-cd d) ab+cd22 21 The formula for the inverse of a matrix a) b) c) d) none of them
26 22 The values of x,y from 4x-2y=8, 3x+y=-4 by matrix method is a) x=2,y= -4 b) x=0,y=2 c) x=0,y= -4 d) none of them 29 23 If =0 then value of x is a) b) c) d) 14 24 The additive inverse of c = is a) b) c) d) none of them 7 25 is a a) diagonal matrix b) identity matrix c) scalar matrix d) rectangular matrix