Determine the wavelenghts of photons

[soul5]

Homework Statement

Determine the wavelenghts of photons given off for the 3rd line in the Lyman series, the 2nd line in the Balmer series and the 1st line in the Paschen series.

The Attempt at a Solution

Lyman series: n=1
Balmer series: n=2
Paschen Series: n=3

What do I do?

 

[hage567]

If you look up the Bohr Model you should come across the equation(s) you need to solve this. See if you can find it.