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f(2)=3, f(3)=4, f(4)=f(5)=5; g(3)=g(4)=7, g(5)=g(9)=11. Then gof(4) is
A11
B5
C7
D9
Answer & Solution
Correct answer: A. 11
f(4) = 5 and g(5) = 11, so gof(4) = 11.
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