Methods for operating memory cells include applying a respective minterm, comprising a plurality of variables, to control gates of series strings of memory cells, each series string programmed as a plurality of pairs of complementary memory cells such that certain ones of the plurality of variables are enabled, and logically combining each of the minterms into a logic function output. Memories include a plurality of memory cells configured in series strings of memory cells, wherein each series string of memory cells is configured to provide a minterm comprising a plurality of variables, each variable enabled responsive to a state of an associated, respective memory cell.