The number of functions from f: A \to B where A=\{a_{1}, a_{2}, a_{3}, a_{4}, a_{5}, a_{6}\}, B=\{1,2,3, . . . 9\} such that f(a_{i+1}) > f(a_{i}) \forall i \in N and f(a_{i}) \neq i is

JEE Advanced 2020 Full Test 4 Paper 1

Question : 51 of 54

Marks: +1, -0

The number of functions from f:A→B where A={a1,a2,a3,a4,a5,a6},B={1,2,3,...9} such that f(ai+1)>f(ai)‌∀i∈N and f(ai)≠i is

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