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Maths-

General

Easy

Question

If the straight lines x=1+s,y=-3-λs,z=1+λs and $x equals fraction numerator t over denominator 2 end fraction comma y equals 1 plus t$ , z=2-t, with parameters s and t respectively, are co planar, then λ=

-2
0
$\frac{- 1}{2}$
-1

The correct answer is: -2

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