We propose to investigate various charmonium states using their common decay channel to View the MathML source at LHC. Having the branching ratios for charmonium decaying into the View the MathML source final state measured or calculated, we propose to measure the charmonium production rate for both hadroproduction including soft-diffraction and inclusive production from b-hadron decays. We discuss the experimental prospects at LHCb, in particular, those for yet unmeasured ηc and hc.