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MHT CET 2018 Math Solved Paper
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© examsnet.com
Question : 36
Total: 50
Matrix A =
[
1
2
3
1
1
5
2
4
7
]
then the value of
a
31
A
31
+
a
32
A
32
+
a
33
A
33
is
1
13
-1
-13
Validate
Solution:
(c) Here A =
[
1
2
3
1
1
5
2
4
7
]
we know that,
a
31
A
31
+
a
32
A
32
+
a
33
A
33
= |A|
= +1( 7 - 20) - 2(7 -10) + 3(4 - 2)
= -13 + 6 + 6 = -1
© examsnet.com
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