SSC
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Numerical Ability
Geometry
In ∆ ABC, G is the centroid, AB = 15 cm, BC = 18 cm, and AC = 25cm. Find GD, where D is the mid-point of BC :
(a) 1/2 √86
(b) 1/3 √86 cm
(c) 7/3 √86 cm
(d) 2/3 √86 cm
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