Mathematics · 2026
JEE Main · 4 April 2026, Shift 2 · Q3
If the system of equations: x+y+z=5; x+2 y+3 z=9; x+3 y+λ z=μ has infinitely many solutions, then the value of λ+μ is:
If the system of equations:
$$\begin{aligned}
& x+y+z=5 \\
& x+2 y+3 z=9 \\
& x+3 y+\lambda z=\mu
\end{aligned}
$$
has infinitely many solutions, then the value of $\displaystyle \lambda+\mu$ is:
Official answer
From NTA’s final answer key for this paper.
(2)
$\displaystyle 18$
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JEE Main 2026 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.