# Vectors and Matrices – 2 MCQ’s

This set of MATLAB Multiple Choice Questions & Answers (MCQs) focuses on “Vectors and Matrices – 2″.

1. What is the output of the following code?

```A=[1 2 a..;
];```

a) Error due to a
b) Error due to A
c) Error due to [];
d) Error due to ;

2. What is the output of the following code?

```A=[1 2 ‘a’;…
];```

a) Error due to ‘a’
b) Error due to ‘…’
c) Error due to []
d) ‘a’

3. What is the output of the following code?

```A=[1 2 3..
];```

a) The output is suppressed
b) A row vector
c) A row vector concatenated with a null matrix
d) Error

4. What is the output of the following code?

```A=[1 2 ‘a’;…
‘f’ ‘q’ ‘w’;…
]];```

a) Syntax Error
b) A 2*3 character matrix
c) The concatenation of 2 vectors, vertically, with size 3
d) Cannot be determined

5. What is the output of the following code?

```A=[1 2 ‘a’;…
‘f’ ‘q’ ‘w’];```

a) A 2*3 character array
b) A 3*2 character matrix
c) A 3*2 character vector
d) A 2*3 character vector

6. What is the output of the following code?

```A=[1 2 ‘a’….;
‘a’ ‘b’ ‘c’;…
];```

a) A 1*6 matrix
b) A 6*1 matrix
c) Error in the code
d) Error in ellipsis

7. What is the output of the following code?

```A=[1 2 ‘a’…;
‘a’ ‘b’ ‘c’;…
];```

a) Error in syntax
b) A 3*2 matrix of characters
c) Error due to 1 and 2
d) Error due to a

8. All matrices are vectors but all vectors are not matrices in MATLAB.
a) True
b) False

9. What is the output of the following code?

`clear ALL `

a) Clears the workspace
b) Clears the matrices
c) Clears the vectors
d) Clears ALL

10. What is the output of the following code?

`isvector([]);`

a) 1
b) 0
c) Syntactical error
d) Logical error

11. What is the output of the following code?

`ismatrix([]);`

a) logical 1
b) logical 0
c) logical -1
d) Error

12. If the dimensions of vectors don’t match, the plot command will always give an error.
a) True
b) False 5 Star
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