Motivated by the indication that both the atmospheric and the solar ne
utrino puzzles may simultaneously be solved by (vacuum as well as matt
er-induced resonant) oscillations of two generations of neutrinos with
large mixing, we have analyzed the data on the atmospheric and solar
neutrinos assuming that all three neutrinos are maximally mixed. It is
shown that the values of Delta m(2) obtained from the two-generation
analyses are still valid even in the three-generation scheme, i.e. the
two puzzles can be solved simultaneously if Delta m(31)(2) similar or
equal to 10(-2) eV(2) for the atmospheric neutrinos and Delta m(21)(2
) similar or equal to 10(-10) eV(2) for solar neutrinos in the maximal
ly mixed three-generation scheme.