Odd Inputs Need Even Outputs
Difficulty: Medium · Topics: Discrete Mathematics, Functions, Function Combinatorics
Toq kirish qiymatlariga juft natija kerak
Let X=\1, 2, 3, 4, 5\. How many functions f:X→ X make a· f(a) even for every a∈ X?
X=\1, 2, 3, 4, 5\ bo‘lsin. Nechta f:X→ X funksiyada har bir a∈ X uchun a· f(a) juft bo‘ladi?