Quiz about MATRICES REVISION

Question 1

The order of Matrix A is

Accepted Answer

2x3

Answer

2

Answer

3

Answer

6

Answer

3x2

Question 2

The matrix A - B is

Accepted Answer

Option D is correct

Answer

A.

Answer

B.

Answer

C.

Question 3

The order of the product TU is:

Accepted Answer

3x1

Answer

1x2

Answer

2x2

Answer

2x1

Answer

3x2

Question 4

The inverse of Matrix B is:

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 5

The first step in the matrix method for solving the above simultaneous equations is

Accepted Answer

Option D is correct

Answer

A.

Answer

B.

Answer

C.

Question 6

The order of matrix B is

Accepted Answer

4x3

Answer

4

Answer

3

Answer

12

Answer

3x4

Question 7

Car sales during a 3-month period for three different models A, B and C were recorded in matrix form. The number of model C sold in June was:

Accepted Answer

7

Answer

1

Answer

4

Answer

5

Answer

9

Question 8

The matrix multiplication QP gives the matrix

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

D.

Question 9

Find A-B

Accepted Answer

-4 0 6 -1

Answer

-3 1 7 -1

Answer

1 0 1 -4

Answer

not possible because rows do not match columns

Question 10

What must be true in order to ADD two matrices?

Accepted Answer

The dimensions must be equal.

Answer

They must be square.

Answer

The determinant can't equal 0.

Answer

The column of the 1st must equal the row of the 2nd.

Question 11

Subtract

Accepted Answer

3 -4 8 -13

Answer

3 -8 0 -1

Answer

-3 8 0 1

Answer

3 -8 -8 1

Question 12

Can the operation be performed?

Accepted Answer

No

Answer

Yes

Answer

Sometimes

Answer

only Mrs. Jordan knows

Question 13

In Matrix R (pictured) what element is a₂₃?

Accepted Answer

6

Answer

8

Answer

9.01

Answer

1

Question 14

Name the order of this matrix.

Accepted Answer

2x6

Answer

6x2

Answer

12

Answer

36

Question 15

These matrices are being multiplied. Determine the dimension/size of the new matrix.

Accepted Answer

Can't multiply them

Answer

4  x  2

Answer

3  x  3

Answer

4  x  3

Question 16

Find the product of the two matrices.

Accepted Answer

17 12
25 18

Answer

8 9 12 6

Answer

6 6 7 5

Answer

12 10
10 12

Question 17

Given matrices A & B:
A is a (4x33) matrix
B is a (33x1) matrix
What are the dimensions of the product of A times B?

Accepted Answer

4x1

Answer

4x33

Answer

33x1

Answer

Matrix does not exist

Question 18

What do m, n, p and q equal in this scalar matrix multiplication?

Accepted Answer

m=15, n = -45, p=20, q=-5

Answer

m=8, n=9, p=-4, q=4

Answer

m=20, n=-5, p=15, q=-45

Answer

m=-5, n=20, p=-45, q=15

MATRICES REVISION

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