If for all x, y \in N, there exists a function f(x) satisfying f(x+y)=f(x) \cdot f(y) such that f(1)=3 and \sum_{x=1}^{n} f(x)=120, then value of n will be

Manipal Entrance Test 2020 Math Paper

Question : 59 of 70

Marks: +1, -0

If for all x,y∈N, there exists a function f(x) satisfying f(x+y)=f(x)⋅f(y) such that f(1)=3 and

∑

x=1

f(x)=120, then value of n will be

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