Найдите декартово произведение a × b множеств a и b 1. a = {a, b, c}; b = {b, e}. а) {(b, a), (e, a), (e, b), (b, b), (b, c), (e, c)} б) {(a, b), (a, e), (b, e), (b, b), (c, b)} в) {(a, b), (a, e), (b, e), (b, b), (c, b), (c, e), (b, a), (e, a), (e, b), (b, b), (b, c), (e, c)} г) {(a, b), (b, e), (a, e), (c, b), (c, e), (b, b)}