What does f do what is inside the parenthesis? The answer is that it adds 1.
f(f(f(f(1)))) = f(f(f(2))) = f(f(3)) = f(4) = 5
If f(x)=x+1f(x)=x+1. What is f(f(f(f(1))))f(f(f(f(1))))?
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