JEE MATHEMATICS MCQ: SEQUENCE OF SERIES

1 Easy

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Application +4 | -1

f(x)

is a function satisfying

f(x+y)=f(x) f(y)

for all

x, y \in N

such that

f(1)=3

and

\sum\limits_{x=1}^n f(x)=120

. Then, the value of

n

View answer and explanation

Correct option: A

Option A (4) is correct because it satisfies the given functional equation and the sum condition, leading to the correct value of n.

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\frac{3}{4}