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If f is a function satisfying f(x+y)=f(x...

If `f` is a function satisfying `f(x+y)=f(x)xxf(y)` for all `x ,y in N` such that `f(1)=3` and `sum_(x=1)^nf(x)=120 ,` find the value of `n` .

A

4

B

5

C

6

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
C
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