defence exam Agniveer Vayu Group X & XY Mock Test 01/2026 Mathematics Triangles Centroid

Let the triangle PQR be the image of the triangle with vertices (1,3), (3,1), (2,4) in the line x+2y=2. If the centroid of triangle PQR is the point (α,β), then what is the value of 15(α−β)?

1
5
2
10
3
22
4
20
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