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Consider the lines L_1 and L_2 given by L_1:\ \dfracx-12=\dfracy-31=\dfracz-22 L_2:\ \dfracx-21=\dfracy-22=\dfracz-33 A line L_3 having direction ratios 1,-1,-2 intersects L_1 and L_2 at the points P and Q respectively. Then the length of line segment PQ is: | Watch the step-by-step video solution for this NIMCET PYQ.