JEE Advanced Model Paper 18 with solutions for online practice

Question : 42 of 60

Marks: +1, -0

Let A = {1 , 2 , 3 , 4 , 5 , 6 , 7 , 8} be a set . Let f : A → A be a function such that f (X) = X , ∀ X ε A , f (X) is even when ever X is even and f (X) is odd when ever X isodd. Then total number of on-to functions satisfying these conditions will be