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Sahay Sir > Question Answers > NCERT Exemplar Class 11 > Maths > Chapter 9 - Sequences and Series > 7. If f is a function satisfying f (x +y) = f(x) f(y) for all x, y ∈ N such that f(1) = 3 and n ∑ x = 1 f(x) = 120 , find the value of n.

7. If f is a function satisfying f (x +y) = f(x) f(y) for all x, y ∈ N such that f(1) = 3 and n ∑ x = 1 f(x) = 120 , find the value of n.

7. If f is a function satisfying f (x +y) = f(x) f(y) for all x find the value of n. y ∈ N such that f(1) = 3 and n ∑ x = 1 f(x) = 120