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AMC 12 2023a Problem 17

  • Paper

Flora the frog starts at 00 on the number line and makes a sequence of jumps to the right. In any one jump, independent of previous jumps, Flora leaps a positive integer distance mm with probability 12m\frac{1}{2^m}. What is the probability that Flora will eventually land at 1010?

(A) 5512(B) 451024(C) 1271024(D) 5111024(E) 12\textbf{(A) } \frac{5}{512} \textbf{(B) } \frac{45}{1024} \textbf{(C) } \frac{127}{1024} \textbf{(D) } \frac{511}{1024} \textbf{(E) } \frac{1}{2}

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

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E

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