464 non-mesic and 65 mesic decay of hyperfragments (HFs) produced by pions of momenta 3·5 GeV/c. and 17·2 GeV/c. and protons of momentum 23 GeV/c., have been used to obtain information on Q−, the ratio of non-mesic toπ− mesic events and S, the ratio of neutron to proton stimulated events as a function of charge of HFs. Q− is found to increase rapidly with the increase in charge of HFs; the value of Q− for HFs of Z⩾3 is 14·6±3·0 which is high compared to the theoretical value of about 4 to 5. The value of S is found to be >1 for all HFs of Z≥2.