An Even Product
Difficulty: Medium · Topics: Discrete Mathematics, Functions, Function Combinatorics
Juft ko‘paytma
How many functions f:\1, 2, 3, 4\→\1, 2, …, 6\ make f(1)f(2)f(3)f(4) even ?
Nechta f:\1, 2, 3, 4\→\1, 2, …, 6\ funksiyada f(1)f(2)f(3)f(4) juft bo‘ladi?