Answer
a) 5
b) 2
c) 4
d) 3
e) 1
f) 4
Work Step by Step
a) $f(g(1))=f(6)=5$
b) $g(f(1))=g(3)=2$
c) $f(f(1))=f(3)=4$
d) $g(g(1))=g(6)=3$
e) $g(f(3))=g(4)=1$
f) $f(g(6))=f(3)=4$
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