Order of the matrix having m rows and n columns is:

• m + n A
• m - n B
• m / n C
• m x n D

Do AB = BA?

• Never A
• Yes B
• May or may not C
• None of these D

Do (A + B) + C = A + (B + C)?

• No A
• Yes B
• May or may not C
• Never D

Cramer's rule is used to solve

• System of quadratic equation A
• System of linear equation B
• Any system of equation C
• None D

In binary system the base of the system is:

• 2 A
• 5 B
• 8 C
• 10 D

If Ax = B then x is

• BA^-1 A
• AB B
• B/A C
• A^-1 B D

In decimal system base of system is:

• 2 A
• 5 B
• 8 C
• 10 D

If A = [aij], then A+ is :

• [aij] A
• [bji] B
• [aji] C
• [aii] D

Any matrix "A" is a symmetric matrix if:

• A = -A A
• A = A^t B
• A = -A^t C
• A = A^-t D

A square matrix whose elements below the main diagonal are all zero is called.

• Upper triangular matrix A
• Lower triangular matrix B
• Rectangular C
• Row matrix D

In a square matrix number of rows and column are

• Equal A
• Now equal B
• Greater C
• Less then D

If A is  a singular matrix then:

• A = 0 A
• |A| = 0 B
• A ≠ 0 C
• |A| ≠ 0 D

• Equal A
• Possible B
• Not possible C
• Zero D

• Unit matrix A
• Diagonal matrix B
• Square matrix C
• Singular matrix D

2 x 10 + 3 x 10^o =.

• 23 A
• 24 B
• 25 C
• 26 D