If `(1)/(p+q),` `(1)/(q+r),(1)/(r+p)` are in A.P.then

7*(1)/(p+q),(1)/(q+r),(1)/(r+p) are in AP,then

If a,(1)/(b),c and (1)/(p),q,(1)/(r) form two arithmetic progressions of the common difference,then a,q,c are in A.P.if p,b,r are in A.P.b.(1)/(p),(1)/(b),(1)/(r) are in A.P.c.p,b,r are in G.P.d. none of these

If the roots of the equation (1)/(x+p)+(1)/(x+q)=(1)/(r) are equal in magnitude and opposite in sign, then (p+q+r)/(r)

If p,q,r are in G.P and tan^(-1)p,tan^(-1)q,tan^(-1)r are in A.P then p,q,r satisfies the relation

If (p)/( q - r) = (p + q)/( r) = (q)/( p) , Then find q : p : r

If a_(1),a_(2),a_(3),…. are in A.P., then a_(p),a_(q),q_(r) are in A.P. if p,q,r are in

If a,b,c in R+ form an A.P.then prove that a+1/(bc),b+1/(1/ac),c+1/(ab) are also in A.P.

The vertices of a triangle are (p q ,1/(p q)),(p q)),(q r ,1/(q r)), and (r q ,1/(r p)), where p ,q and r are the roots of the equation y^3-3y^2+6y+1=0 . The coordinates of its centroid are (1,2) (b) 2,-1) (1,-1) (d) 2,3)

In an A.P. let T_(r) denote r ^(th) term from beginning, T_(p) - (1)/(q (p +q)), T_(q) -(1)/(p(p+q)), then :