If the centroid of triangle whose vertices are \( (a, 1,3) \), \( (-2, b,-5) \) and \( (4,7, c) ....

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If the centroid of triangle whose vertices are \( (a, 1,3) \),
\( \mathrm{P} \)
\( (-2, b,-5) \) and \( (4,7, c) \) be the origin, then which of
W
following is (are) true
(1) \( a=2, b=-8 \)
(2) \( \quad a=-2, c=2 \)
(3) \( b=-8, c=2 \)
(4) \( a=-2, b=-8 \)


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