An Even Sum
Difficulty: Medium · Topics: Discrete Mathematics, Functions, Function Combinatorics
Juft yig‘indi
How many functions f:\1, 2, 3\→\1, 2, …, 6\ make f(1)+f(2)+f(3) even ?
Nechta f:\1, 2, 3\→\1, 2, …, 6\ funksiyada f(1)+f(2)+f(3) juft bo‘ladi?