[en] Hypernuclear decays with production of γ-quanta as well as Dalitz pairs induced by the radiative and conversion decays of Λ-particles (Λ → n+γ and Λ → n+e⁺+e^- respectively) are discussed. The hypernuclei are considered to be useful for the investigation of these decays because in this case charged particles will take part in hypernuclear decays. Besides, nuclear spin selection rules are available restricting the number of form factors in a matrix element. Decays with production of several nuclei and nucleons can manifest an appreciable effect of the strong final-state interaction. The hypernuclear decays with production of leptons and π-mesons are briefly discussed as well