If f(x) is a function satisfying f(x+y)=f(x) . f(y) for all x, y \in ▯ such that f(1)=3 and \sum_{x=1}^{n} f(x)=120, then the value of n is

CUSAT 2021 BTech Solved Paper Shift 2

Question : 139 of 250

Marks: +1, -0

If f(x) is a function satisfying f(x+y)=f(x).f(y) for all x,y∈▯ such that f(1)=3 and

∑

x=1

f(x)=120, then the value of n is

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