What are the photon wavelengths of the 1st and 2nd transitions?

Question

A H atom is in the ground state. It absorbs energy and makes a transition to the n=3 excited state. The atom returns to the ground state by emitting two photons, one in dropping to the n=2 state and one in dropping further to the ground state.

Answer 1

Isn't it sad that you can get away with not understanding this basic quantum stuff - and can just cheat and get it answered for you?  But I guess the teacher's job is not to insure you have a good education but to give you the opportunity to learn.