If three positive numbers `a, b, c` are in `A.P. and 1/a^2,1/b^2,1/c^2` also in `A.P.` then

If three positive numbers a,b,c are in A.P ad tan^(-1)a,tan^(-1)b,tan^(-1)c are also in A.P such that b lt 1 and ac lt 1 then

If distinct positive number a , b, c, are in G.P. and (1)/(a-b), (1)/(c-a),(1)/(b-c) are in A.P. , then value of a + ab + c is equal to

Let a,b,c,d and e be distinct positive numbers. If a,b,c and 1/c,1/d,1/e both are in A.P. And b,c,d are in G.P.then

For distinct positive numbers a,b and c, if a^2,b^2,c^2 are in A.P. Then which of the following triplets is also in A.P.