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Two vertices of a triangle have position...

Two vertices of a triangle have position vectors `3hati+4hatj-4hatk` and `2hati+3hatj+4hatk.` If the position vector of the centroid is `hati+2hatj+3hatk`, then the position vector of the third vertex is

A

`- 2hati - hatj + 9 hatk `

B

`- 2 hati - hatj - 6 hatk `

C

`-2 hati - hatj + 6 hatk `

D

`2hati - hatj + 6hatk `

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The correct Answer is:
` - 2hati - hatj + 9 hatk `
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SURA PUBLICATION-SURAS MODAL QUESTION PAPER-1 MATHEMATICS -Section-IV
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