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JEE PYQ: Vector 3D Question 71

Question 71 - 2019 (11 Jan Shift 2)

If the point $(2, \alpha, \beta)$ lies on the plane which passes through the points $(3, 4, 2)$ and $(7, 0, 6)$ and is perpendicular to the plane $2x - 5y = 15$, then $2\alpha - 3\beta$ is equal to:

(1) $12$

(2) $7$

(3) $5$

(4) $17$

Show Answer

Answer: (2)


Learning Progress: Step 71 of 75 in this series