JEE PYQ: Vector 3D Question 27
Question 27 - 2021 (26 Feb Shift 2)
If the mirror image of the point $(1, 1, 3)$ with respect to the plane $4x - 5y + 2z = 8$ is $(\alpha, \beta, \gamma)$, then $5(\alpha + \beta + \gamma)$ equals:
(1) $47$
(2) $39$
(3) $43$
(4) $41$