Difference between revisions of "2024 AMC 12B Problems/Problem 6"

(Problem 6)
(Problem 6)
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==Problem 6==
 
==Problem 6==
  
The national debt of the United States is on track to reach <math>5\times10^13</math> dollars by <math>2023</math>. How many digits does this number of dollars have when written as a numeral in base 5? (The approximation of <math>\log_{10} 5</math> as <math>0.7</math> is sufficient for this problem)
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The national debt of the United States is on track to reach <math>5\times10^{13}</math> dollars by <math>2023</math>. How many digits does this number of dollars have when written as a numeral in base 5? (The approximation of <math>\log_{10} 5</math> as <math>0.7</math> is sufficient for this problem)
  
 
<math>\textbf{(A) } 18 \qquad\textbf{(B) } 20 \qquad\textbf{(C) } 21 \qquad\textbf{(D) } 24 \qquad\textbf{(E) } 26</math>
 
<math>\textbf{(A) } 18 \qquad\textbf{(B) } 20 \qquad\textbf{(C) } 21 \qquad\textbf{(D) } 24 \qquad\textbf{(E) } 26</math>

Revision as of 01:12, 14 November 2024

Problem 6

The national debt of the United States is on track to reach $5\times10^{13}$ dollars by $2023$. How many digits does this number of dollars have when written as a numeral in base 5? (The approximation of $\log_{10} 5$ as $0.7$ is sufficient for this problem)

$\textbf{(A) } 18 \qquad\textbf{(B) } 20 \qquad\textbf{(C) } 21 \qquad\textbf{(D) } 24 \qquad\textbf{(E) } 26$