11th Class FSC Mathematics Chapter 3 Test Online

If A = [aij] and B = [bij] are two matrices of same order r × s, then order of A - B is:

• r - s A
• r × s B
• r + s C
• none of these D

If AB = BA = I, then A and B are:

• equal to each other A
• multiplicative inverse of each other B
• additive inverse of each other C
• both singular D

If A = [a_ij], B = [b_ij] and AB = 0 then:

• A = 0 A
• B = 0 B
• either A = 0 or B = 0 C
• A & B not necessarily zero D

For a square matrix A, |A| equals:

• A^t A
• |A^t| B
• -|A^t| C
• -A^t D

If any two rows of a square matrix are interchanged, the determinant of the resulting matrix:

• is zero A
• is multiplicative inverse of the determinant of the original matrix B
• is additive inverse of the determinant the original matrix C
• none of these D

• 3 A
• -3 B
• 1/3 C
• -1/3 D

• 
  A
• 
  B
• 
  C
• 
  D

• 3×1 A
• 1×3 B
• 3×3 C
• 1×1 D

If A and B are two matrices, then:

• A B = O A
• AB = BA B
• AB = I C
• AB may not be defined D

• scalar matrix A
• diagonalmatrix B
• triangularmatrix C
• none of these D

• scalarmatrix A
• diagonalmatrix B
• lower triangularmatrix C
• uppertriangularmatrix D

• 40 A
• -40 B
• 26 C
• -26 D

[0] is a:

• 
  A
• 
  B
• 
  C
• 
  D

A^-1 exists if A is:

• singular A
• nonsingular B
• symmetric C
• none D

Two matrices X and Y are equal if and only if:

• X and Y are of same order A
• Their corresponding elements are equal B
• Both a and b C
• None of these D

If a matrix A is symmetric as well as skew symmetric, then:

• A is null matrix A
• A is unit matrix B
• A is triangular matrix C
• A is diagonal matrix D

• 
  A
• 
  B
• 
  C
• None D

• 5 A
• -5 B
• -4 C
• 4 D

• ab - cd = 0 A
• ac - bd = 0 B
• ad - bc = 1 C
• ad - bc = 0 D

If A is a square matrix, then A - A^t is:

• 
  A
• 
  B
• 
  C
• 
  D