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BITSAT 2006 Solved Question Paper
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© examsnet.com
Question : 12
Total: 150
If
A
=
[
3
5
2
0
]
and
B
=
[
1
17
0
−
10
]
, then |AB| is equel to :
80
100
−
110
92
Validate
Solution:
A
=
[
3
5
2
0
]
and
B
=
[
1
17
0
−
10
]
∴
AB
=
[
3
5
2
0
]
[
1
17
0
−
10
]
=
[
3
+
0
51
−
50
2
+
0
34
−
0
]
=
[
3
1
2
34
]
⇒
|
AB
|
=
|
1
1
2
34
|
= 102 - 2
= 100
© examsnet.com
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