If the lines ax+by+c=0,bx+cy+a=0 and cx+ay+b=0 be concurrent, then....

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If the lines 0:06:14

If the lines `ax+y+1=0`, `x+by+1=0` and `x+y+c=0`, (`a`,`b`,`c` being distinct and different ...

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If the vertices of a triangle `PQR` are rational points, then which of the following points of ...

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If coordinates of orthocentre and centroid of a triangle are \( (4,-1) \) and \( (2,1) \), respe...