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Study Stuff for MCA Examinations - NIMCET
Study Stuff for MCA Examinations - NIMCET
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If the image of the point $P(a, 2, a)$ in the line
$\dfrac{x}{2} = \dfrac{y + a}{1} = \dfrac{z}{1}$
is $Q$ and the image of $Q$ in the line
$\dfrac{x - 2b}{2} = \dfrac{y - a}{1} = \dfrac{z + 2b}{-5}$
is $P$, then $a + b$ is equal to ______.
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