A. (2,1/2,4)

B. (7/2,-1/2,1)

C. (5/2,1,0)

D. (8/3,1/3,5/3)

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)=

The ratio in which yz-plane divides the line segment joining (3,4,5) ,(2,-3,1) is

The point dividing the join of (3, -2, 1} and (-2, 3, 11) in the ratio 2 : 3 is :

If (1,2,3), (2,3,1) are two vertices of an equilateral triangle then its third vertex is