Mathematics · 2021
JEE Main · 26 February 2021, Shift 2 · Q61
If the mirror image of the point ( 1,3,5 ) with respect to the plane 4 x-5 y+2 z=8 is ( α, β, γ ), then 5(α+β+γ) equals:
If the mirror image of the point ( $\displaystyle 1,3,5$ ) with respect to the plane $\displaystyle 4 x-5 y+2 z=8$ is ( $\displaystyle \alpha, \beta, \gamma$ ), then $\displaystyle 5(\alpha+\beta+\gamma)$ equals :
Official answer
(4)
$\displaystyle 47$
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JEE Main 2021 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.