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If the straight lines x=1 +s,y=-3-lam...

If the straight lines
x=1 +s,y=-3`-lambdas,z=1+lambdas` and `x=(t)/(2)`,y=t ,z=2-t with parameters s and t respectively are co planar then `lambda` =

A

`-2`

B

`-1`

C

`-1/2`

D

`0`

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The correct Answer is:
A
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