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Class VI
Class VII
Class VIII
Class IX
Class X
ICSE Grade X - Matrices
Question
1
1.
If A =
[
0
-3
-2
3
]
and B =
[
-2
4
3
0
]
, then
3
A
+
10
B =
[
-20
31
23
9
]
[
-20
31
24
9
]
[
-20
31
26
9
]
[
-20
31
24
10
]
[
-20
31
21
9
]
Question
2
2.
The order of matrix A =
[
3
-3
2
3
4
0
]
is
3 ✕ 3
4 ✕ 2
2 ✕ 2
2 ✕ 3
3 ✕ 2
Question
3
3.
Which of the following matrices is a
2 ✕ 1
matrix ?
[
4
9
4
2
1
5
]
[
3
5
7
9
]
[
2
2
]
[
5
1
6
]
[
1
7
]
Question
4
4.
If A =
[
8
4
-8
6
]
, then find B satisfying A
✕ B = A
[
1
0
0
1
]
[
4
0
0
1
]
[
2
0
0
1
]
[
1
0
0
-2
]
[
1
-1
0
1
]
Question
5
5.
If A =
[
-2
1
4
-1
1
-3
0
-1
-1
]
, then
10
A =
[
-20
10
40
-10
13
-30
0
-10
-10
]
[
-20
10
40
-10
10
-30
1
-10
-10
]
[
-20
10
40
-10
10
-30
0
-10
-10
]
[
-20
10
40
-10
8
-30
0
-10
-10
]
[
-21
10
40
-10
10
-30
0
-10
-10
]
Question
6
6.
If A =
[
a
11
a
12
a
13
a
21
a
22
a
23
a
31
a
32
a
33
]
and B =
[
b
11
b
12
b
13
b
21
b
22
b
23
b
31
b
32
b
33
]
,
then
(
A
−
B
)
=
[
a
11
−
b
11
a
12
−
b
12
a
13
−
b
13
a
21
−
b
21
a
22
−
b
22
a
23
−
b
23
a
31
−
b
31
a
32
−
b
32
a
33
−
b
33
]
[
a
11
−
b
11
a
21
−
b
21
a
31
−
b
31
a
12
−
b
12
a
22
−
b
22
a
32
−
b
32
a
13
−
b
13
a
23
−
b
23
a
33
−
b
33
]
[
a
11
−
b
11
a
21
−
b
12
a
31
−
b
13
a
12
−
b
21
a
22
−
b
22
a
32
−
b
23
a
13
−
b
31
a
23
−
b
32
a
33
−
b
33
]
[
a
11
b
11
+
a
12
b
21
+
a
13
b
31
a
11
b
12
+
a
12
b
22
+
a
13
b
32
a
11
b
13
+
a
12
b
23
+
a
13
b
33
a
21
b
11
+
a
22
b
21
+
a
23
b
31
a
21
b
12
+
a
22
b
22
+
a
23
b
32
a
21
b
13
+
a
22
b
23
+
a
23
b
33
a
31
b
11
+
a
32
b
21
+
a
33
b
31
a
31
b
12
+
a
32
b
22
+
a
33
b
32
a
31
b
13
+
a
32
b
23
+
a
33
b
33
]
Question
7
7.
If A =
[
1
1
6
2
]
and B =
[
2
6
7
8
]
, find
(
A
+
B
)
2
[
103
91
169
191
]
[
100
88
169
191
]
[
100
91
169
192
]
[
100
91
169
190
]
[
100
91
169
191
]
Question
8
8.
If A =
[
a
11
a
12
a
21
a
22
]
and B =
[
b
11
b
12
b
21
b
22
]
,
then
(
A
+
B
)
=
[
a
11
b
11
+
a
12
b
21
a
11
b
12
+
a
12
b
22
a
21
b
11
+
a
22
b
21
a
21
b
12
+
a
22
b
22
]
[
a
11
+
b
11
a
12
+
b
12
a
21
+
b
21
a
22
+
b
22
]
[
a
11
+
b
11
a
21
+
b
21
a
12
+
b
12
a
22
+
b
22
]
[
a
11
+
b
11
a
21
+
b
12
a
12
+
b
21
a
22
+
b
22
]
Question
9
9.
Which of the following matrices is a
1 ✕ 2
matrix ?
[
1
6
6
]
[
7
3
6
7
]
[
4
7
5
7
2
3
]
[
3
4
]
[
5
1
]
Question
10
10.
If A =
[
-1
3
1
3
]
, then find B satisfying A
+
B = I
[
2
-1
-1
-2
]
[
2
-3
-1
-3
]
[
2
-3
-1
-2
]
[
2
-2
-1
-2
]
[
2
-5
-1
-2
]
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