Mathematics · 2020
JEE Main · 2 September 2020, Shift 2 · Q67
A plane passing through the point (3, 1, 1) contains two lines whose direction ratios are 1, -2, 2 and 2, 3, -1 respectively. If this plane also…
A plane passing through the point ($\displaystyle 3$, $\displaystyle 1$, $\displaystyle 1$) contains two lines whose direction ratios are $\displaystyle 1$, -$\displaystyle 2$, $\displaystyle 2$ and $\displaystyle 2$, $\displaystyle 3$, -$\displaystyle 1$ respectively. If this plane also passes through the point $\displaystyle (\alpha,-3,5)$, then $\displaystyle \alpha$ is equal to :
Official answer
(3)
$\displaystyle 5$
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JEE Main 2020 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.