1.

Let N be the set of natural numbers. Suppose f:N→N is a function satisfying the following conditions :(a) f(m+n)=f(m)+f(n)(b) f(2)=2Then the value of 1720∑k=1f(k) is

Answer»

Let N be the set of natural numbers. Suppose f:NN is a function satisfying the following conditions :

(a) f(m+n)=f(m)+f(n)(b) f(2)=2

Then the value of 1720k=1f(k) is



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