Verb, 9 letters meaning to determine amount or number of something mathematically

What happens once in a minute twice in a moment and never in a thousand years?

Wich statements best identifies a problem with this method

Hurry i'll give 20 pts and a to whoever will comment first hurry no coying compares how both dickinson and shelley use form - lines, capitalization, and punctuation - to bring meaning to the poems "will there really be a 'morning'? ", "i dwell in possibility", and "ozymandias".