Statement-l: If the diagonals of the quadrilateral formed by the lines `px+ gy+ r= 0, p'x +gy +r'= 0, p'x +q'y +r'= 0`, are at right angles, then `p^2 +q^2= p^2+q^2`. Statement-2: Diagonals of a rhombus are bisected and perpendicular to each other.

Statement-l: If the diagonals of the quadrilateral formed by the lines px+ qy+ r= 0, p'x +q'y +r'= 0 , are at right angles, then p^2 +q^2= p' ^2+q' ^2 . Statement-2: Diagonals of a rhombus are bisected and perpendicular to each other. Only conclusion I follows Only conclusion II follows Either I or II follows Neither I nor II follows

If p != 0, q != 0 and the roots of x^(2) + px +q = 0 are p and q, then (p, q) =

If p != 0, q != 0 and the roots of x^(2) + px +q = 0 are p and q, then (p, q) =

Let p, q, r be distinct positive numbers. Three lines p x+q y+r=0, q x+r y+p=0 and r x+p y+q=0 are concurrent, if

If lines p x+q y+r=0,q x+r y+p=0 and r x+p y+q=0 are concurrent, then prove that p+q+r=0 (where p ,q ,r are distinct ) .

If the roots of the equation px ^(2) +qx + r=0, where 2p , q, 2r are in G.P, are of the form alpha ^(2), 4 alpha-4. Then the value of 2p + 4q+7r is :

If the roots of the equation px ^(2) +qx + r=0, where 2p , q, 2r are in G.P, are of the form alpha ^(2), 4 alpha-4. Then the value of 2p + 4q+7r is :

If lines p x+q y+r=0,q x+r y+p=0 and r x+p y+q=0 are concurrent, then prove that p+q+r=0(where, p ,q ,r are distinct )dot

If lines p x+q y+r=0,q x+r y+p=0 and r x+p y+q=0 are concurrent, then prove that p+q+r=0(where, p ,q ,r are distinct )dot