Onto a Three-Element Set
Difficulty: Hard · Topics: Discrete Mathematics, Functions, Function Combinatorics
Uch elementli to‘plamga syuryektiv
How many onto functions f:\1, 2, 3, 4, 5\→\1, 2, 3\ are there?
Nechta syuryektiv f:\1, 2, 3, 4, 5\→\1, 2, 3\ funksiya mavjud?