
MULTIPLE CHOICE QUESTIONS
CHAPTER 1 MATRICES AND LINEAR
E
QUATIONS
1. If
01 6
10 5
657
A
−
⎡⎤
⎢⎥
=−
⎢⎥
⎢⎥
−
⎣⎦
and
0
0
7
ca
Bc b
ab
−
⎡⎤
⎢⎥
=−
⎢⎥
⎢⎥
−
⎣⎦
and A = B then (a, b, c) =
(a) (6, 5, 1) (b) (5, 6, 1)
(c) (6, 1, 5) (d) (0, 1, −1) Ans: (a)
2. Which one of the following is a scalar matrix?
(a)
010
010
020
−
⎡⎤
⎢⎥
⎢⎥
⎢⎥
⎣⎦
(b)
30 0
030
00 3
−
⎡⎤
⎢⎥
−
⎢⎥
⎢⎥
−
⎣⎦
(c)
045
040
004
⎡⎤
⎢⎥
−
⎢⎥
⎢⎥
⎣⎦
(d)
001
010
100
⎡⎤
⎢⎥
⎢⎥
⎢⎥
⎣⎦
Ans: (b)
3. The matrix
100
000
000
⎡⎤
⎢⎥
⎢⎥
⎢⎥
⎣⎦
is a __________
matrix.
(a) Unit (b) Diagonal
(c) Zero (d) Rectangle Ans: (b)
4. Two matrices are said to be equivalent if
(a) They are of the same size and have the
same elements
(b) One is a submatrix of the other
(c) ...