# 1-to-1

Level pending

$$f: X \rightarrow Y\$$ and $$\ g: Y \rightarrow Z$$ are one-to-one correspondence functions for the following three sets: $X=\{1, 2, 3\},\;\; Y=\{a, b, 11\},\;\; Z=\{4, 5, 6\}.$ If $$f(1)=a, g(11)=6$$ and $$(g \circ f)(2) = 4$$, what is the value of $f(3)+g(b)?$

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