11th Class Math MCQS Chapter 3

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11th Class Math MCQS


If |A| is the determination of a square matrix A then |A| is:
Always positive
May be +ve or -ve
Modulus of A
Always negative

Let A be a non-zero matrix if r is the number of non-zero rows when it is reduced to the reduced echelon form, then r is called the;
Order of matrix
None of these
Determinant of the matrix
Rank of the matrix

If the system has no solution, then the system is:
Consistent
Inconsistent
None of these
Unique

A equation of the form ax + by = c is called
None of these
Non-Homogeneous linear equation
Homogeneous linear equation
Linear equation

If the matrix has only one row but more than one column, the matrix is
None of these
Column
Row
Real

If ‘A’ is a square matrix of order 3 x 3 then |KA| equals:
K4|A|
K2|A|
K3|A|
K|A|

If ‘A’ is a square matrix of order 3 x then |A| = __________
a11 A11 + a12A12 + a13 A13
A11 + A12+ A13
a11+a12+a13
a11 A11 – a12A12 + a13 A13

A square matrix A = [aij] is called skew symmetric if
None of these
A = ± At
A = At
At = -A

A square matrix A = [aij] is called upper triangle if
aij = 0, i ? j
aij ? 0,i = j
aij ? 0,i < j
aij ? 0,i > j

The principal diagonal of a square matrix is also called
Diagonal
The leading diagonal
Horizontal diagonal
Vertical diagonal

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