Official PYQ · 2020Set 1 · Q26Linear AlgebraMCQ2 marks

GATE EC 2020 Set 1 Q26 — Linear Algebra

Consider the following system of linear equations.

$\begin{array}{llll} x_{1}+2x_{2}=b_{1} ; & 2x_{1}+4x_{2}=b_{2}; & 3x_{1}+7x_{2}=b_{3} ; & 3x_{1}+9x_{2}=b_{4} \end{array}$

Which one of the following conditions ensures that a solution exists for the above system?

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Answer: A

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Published 10 Oct 2026

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