A. 13/√74

B. 3/√74

C. 5/√74

D. 6/√74

The ratio in which (5,4,-6) divides the line segment joining (3,2,-4),(9,8,-10) is

The circumcentre of the triangle formed by the points(1,2,3), (3,-1,5), (4,0,-3) is

The coplanar points(3,2,1), (5,6,5),(2,1,2),(0,-3,-2) form a

If the centroid of the triangle formed by (a,1,3), (-2,b,-5) and (4,7,c) is the origin then(a,b,c)=

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