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Matrices and Determinants

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Let a, b and c be three real numbers satisfying
[

a

b

c

][

1	9	7
8	2	7
7	3	7

] = [

0

0

0

] (E)

Section: Mathematics

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Question : 44

Total: 56

If the point P(a, b, c), with reference to (E), lies on the plane 2x + y + z = 1, then the value of 7a + b + c is

[JEE Adv 2011 P1]

0
12
7
6

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