Let x >1, y >1, z >1 be in GP. Then $\rm \frac{1}{1+ln x}, \frac{1}{1+lny}, \frac{1}{1+\ln z}$ are

If the sum of the first n terms of a series is n(2n+1), then what is the nth term?

In an AP, the ratio of the sum of the first p terms to the sum of the first q terms is p² : q². Which one of the following is correct?

Direction : Consider the following for the items that follow :  

The product of 5 consecutive terms of an AP is 229635. The first, second and fifth terms are in GP. 

What is the common difference?