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Matrices and Determinants question

2011 · Shift 1 · Q43

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JEE Advanced
Mathematics
Matrices and Determinants
2011 · Shift 1 · Q43

Matrices and Determinants question

2011 · Shift 1 · Q43

JEE AdvancedMathematicsMatrices and DeterminantsMCQ+3 / −1

Let a, b and c be three real numbers satisfying

[\begin{matrix} a & b & c \\ \end{matrix} ]\left[ {\begin{matrix} 1 & 9 & 7 \\ 8 & 2 & 7 \\ 7 & 3 & 7 \\ \end{matrix} } \right] = [\begin{matrix} 0 & 0 & 0 \\ \end{matrix} ]

.......(E)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

A
0
B
12
C
7
D
6

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