Mathematics · 2021
JEE Main · 25 July 2021, Shift 1 · Q79
The values of a and b, for which the system of equations 2 x+3 y+6 z=8; x+2 y+ a z=5; 3 x+5 y+9 z= b has no solution, are:
The values of $\displaystyle a$ and $\displaystyle b$, for which the system of equations
$$\begin{array}{r}
2 x+3 y+6 z=8 \\
x+2 y+\mathrm{a} z=5 \\
3 x+5 y+9 z=\mathrm{b}
\end{array}
$$
has no solution, are :
Official answer
(2)
$\displaystyle a=3, b \neq 13$
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JEE Main 2021 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.