Let A=\{1,2,3,4,5\} and B=\{3,4,5,6,7,8,9\} are two sets, then the number of one-one functions f: A \to B such that |f(i)-i| \leq 4 \forall i \in A, is equal to

JEE Advanced 2020 Full Test 2 Paper 1

Question : 39 of 54

Marks: +1, -0

Let A={1,2,3,4,5} and B={3,4,5,6,7,8,9} are two sets, then the number of one-one functions f:A→B such that |f(i)−i|≤4‌∀i∈A, is equal to

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