+2 Maths - Important One Mark Questions

+2 HSC Maths - Important Sums / One mark questions. New bunch of 15 sample questions for practice.

1) If two rows or columns of a determinants are identical, then the value of the determinants is:


a) 1


b) 2


c) 0


d) 3




2) If the number of rows and columns are equal, then this matrix is called:


a) rectangular matrix


b) square matrix


c) null matrix


d) diagonal matrix




3) If A and B are matrices conformable to multiplication, then


a)


b)


c)


d) AB




4) Solve 2x+3y=7; 4x+6y=10 by determinant method.


a) (1,1)


b) (1,0)


c) (0,1)


d) no solution




5) If , then the rank of is


a) 3


b) 0


c) 1


d) 2




6) If A is a square matrix of order n, then |adj A| is


a)


b)


c)


d)




7) In a system of 3 linear non-homogenous equations with three unknowns, if and , and , then the system has


a) unique solution


b) two solutions


c) infinitely many solutions


d) no solution




8) Given number of unknowns then the system has


a) unique solution


b) no solution


c) two solutions


d) infinitely many solutions




9) The rank of the matrix is


a) 1


b) 2


c) 3


d) none of these




10) The condition for a unique solution of a system of equation is


a)


b)


c)


d)




11) Which of the following is a singular matrix?


a)


b)


c)


d)




12) The rank of a zero matrix of order 3 x 4 is:


a) 0


b) 1


c) 2


d) 3