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AMC 12 2011b Problem 17

  • Paper

Let f(x)=1010x,g(x)=log⁡10(x10),h1(x)=g(f(x))f(x) = 10^{10x}, g(x) = \log_{10}\left(\frac{x}{10}\right), h_1(x) = g(f(x)), and hn(x)=h1(hn−1(x))h_n(x) = h_1(h_{n-1}(x)) for integers n≥2n \geq 2. What is the sum of the digits of h2011(1)h_{2011}(1)?

\textbf{(A)}\ 16081 \textbf{(B)}\ 16089 \textbf{(C)}\ 18089 \textbf{(D)}\ 18098 \textbf{(E)}\ 18099

Dataset text AMC 12 2000 to 2025. Quoted with source.

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B

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