in a room of n people a pair is randomly chosen and they they wrestle. the loser is turned out of and another pair is chosen to wrestle and so the game goes on till only 1 person is left. how many different ways can this game play out

Awavelength of 610 nm was found to be the most intense wavelength emitted by copper. answer the following questions about this wavelength of light. a) what is this wavelength in cm? b) what is the frequency that corresponds to this wavelength? c) what is the energy of light of this wavelength? d) what is the wavenumber corresponding to this wavelength?