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Questions  

The equation of a plane which passes through the point of intersection of lines x13=y21=z32 and x31=y12=z23 and at greatest distance from point (0,0,0) is

a
4x+3y+5z=25
b
4x+3y+5z=50
c
4x+3y+5z=49
d
x+7y−5z=2

detailed solution

Correct option is B

Let a point (3λ+1,λ+2,2λ+3) of the first line also lies on the second line Then 3λ+1−31=λ+2−12=2λ+3−23⇒λ=1Hence, the point of intersection P of the two lines is (4,3,5)verify options and perpendicular distance from origin is maximum

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