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If the centroid of tetrahedron OABC wher...

If the centroid of tetrahedron OABC where A,B,C are given by (a,2,3),(1,b,2) and (2,1,c) respectively is (1,2,−2), then distance of P(a,b,c) from origin is

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The correct Answer is:
`sqrt(195)`
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