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Byju's Answer
Standard XIII
Mathematics
Properties of Determinants
The value of ...
Question
The value of
∣
∣ ∣ ∣
∣
1
2
2
2
3
2
2
2
3
2
4
2
3
2
4
2
5
2
∣
∣ ∣ ∣
∣
is
A
-8
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B
8
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C
400
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D
1
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Solution
The correct option is
A
-8
∣
∣ ∣ ∣
∣
1
2
2
2
3
2
2
2
3
2
4
2
3
2
4
2
5
2
∣
∣ ∣ ∣
∣
{
O
p
e
r
a
t
e
R
3
→
R
3
−
R
2
,
R
2
→
R
2
−
R
1
}
=
∣
∣ ∣
∣
1
4
9
3
5
7
5
7
9
∣
∣ ∣
∣
=
1
(
45
−
49
)
−
4
(
27
−
35
)
+
9
(
21
−
25
)
=
−
4
+
32
−
36
=
−
8.
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