How many keys does a modern piano have?

A modern piano typically has 88 keys, consisting of 52 white keys and 36 black keys. These keys are arranged in a specific pattern to cover the full range of musical notes. The white keys represent the natural notes (A, B, C, D, E, F, and G), while the black keys represent the sharp or flat notes (# or b). The arrangement of the keys allows for chromatic演奏 or the playing of all twelve notes within an octave.