2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/230977A universality ansatz for the contact values of a multicomponent mixture of additive hard spheres is used to propose new formulae for the case of disparate-size binary mixtures. A comparison with simulation data and with a recent proposal by Alawneh and Henderson for binary mixtures shows reasonably good agreement with the predictions for the contact values of the large-large radial distribution functions. A discussion on the usefulness and limitations of the new proposals is also presented.12 pages, 10 figures; v2: typo in Eq. (28) correctedSoft Condensed MatterStatistical MechanicsChemical Physicstext