Deck 36: Matrices

Question 1

What is the result if the matrix X is subtracted from matrix Y?

A)
B)
C)
D)

Answer 1

Question 2

A) 96
B) 72
C) 30
D) 24

Answer 2

72

Question 3

In the following matrix 'A', what is the value of A1,2 ?

A) 3
B) 4
C) 5
D) 2

Answer 3

5

Question 4

A company has two offices represented by the matrices A and B. Each records the number of female and male staff and the number of managers and non-managers. Which option below represents the total number of female staff employed by the firm?

A) 5
B) 20
C) 53
D) 73

Question 5

A manufacturing company has a particularly error-prone machine and records the number of faults over 50 items (1 day's production). In the transition matrix T the number of times an error was produced is recorded, along with the result of the next item. Which option is the correct proportional transition matrix?

A)
B)
C)
D)

Question 6

A)
B)
C)
D)

Question 7

Which of the following statements concerning the definition of matrices is NOT true?

A) The number at an intersection of a row and column is referred to as a value
B) A matrix can consist of any number of rows and columns
C) A matrix with the same number of rows as columns is called a square matrix
D) The size of a matrix is given by number of rows and columns (e.g. a by b matrix)

Question 8

Which of the following options for matrix C is the result of C = A*B?

A)
B)
C)
D)

Question 9

If a 3x2 matrix is multipled by a 2x5 matrix what is the size of the resulting matrix?

A) 3x5
B) 3x2
C) 2x5
D) 2x2

Question 10

A)
B)
C)
D)