GWD-30-19

poorleafs

Q19:

If n is positive, which of the following is equal to 1 / {√(n+1) -√n}?

 

A.          1

B.          √(2n+1)

C.          √(n+1) / √n

D.         √(n+1) - √n

E.          √(n+1) + √n