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If (1,2,4)and (2 , -3lambda , -3) are...

If (1,2,4)and ` (2 , -3lambda , -3) ` are the intial and terminal points of the vetcor `vec(i) + 5vec(j) - 7vec(k)` then the value of `lambda ………`

A

`7/3`

B

`-7/3`

C

`5/3`

D

`(-5)/3`

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