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1. What is the main diagonal of a matrix?
A
The elements in the last row
B
The elements from the top left to the bottom right
C
The elements in the first column
2. What is the determinant of a 2x2 matrix [a, b; c, d]?
A
a * d - b * c
B
ad - bc
C
a + b + c + d
3. What is the result of multiplying a 3x2 matrix by a 2x4 matrix?
A
A 3x4 matrix
B
A 2x2 matrix
C
A 3x3 matrix
4. What is the identity matrix?
A
A matrix with all elements equal to 1
B
A square matrix with 1s on the main diagonal and 0s elsewhere
C
A matrix with all elements equal to 0
5. What is the transpose of a matrix?
A
A matrix with the same elements in reverse order
B
A matrix with all elements multiplied by 2
C
A matrix where the rows and columns are swapped
6. What is the inverse of a matrix A?
A
A matrix with all elements multiplied by -1
B
A matrix B such that A * B = B * A = Identity matrix
C
A matrix with all elements divided by 2
7. What is the rank of a matrix?
A
The number of rows multiplied by the number of columns
B
The sum of all elements in the matrix
C
The maximum number of linearly independent rows or columns
8. What is a square matrix?
A
A matrix with all elements equal to 1
B
A matrix with the same number of rows and columns
C
A matrix with more columns than rows
9. What is the result of adding two matrices of the same size?
A
A matrix where each element is the sum of the corresponding elements
B
A matrix with the same elements in reverse order
C
A matrix with all elements multiplied by 2
10. What is a diagonal matrix?
A
A matrix with elements only on the last row
B
A matrix with elements only on the main diagonal
C
A matrix where all non-diagonal elements are zero