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If line vec r=( hat i-2 hat j- hat k)+l...

If line ` vec r=( hat i-2 hat j- hat k)+lambda(2 hat i+ hat j+2 hat k)` is parallel to the plane ` vec r.(3 hat i-m hat k)=14` , then the value of `m` is
`(1). 2`
`(2)` `-2`
`(3) 0`
`(4) 3`

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