2015 AMC 12A Problems/Problem 15

Problem 15

What is the minimum number of digits to the right of the decimal point needed to express the fraction as a decimal?

$\textbf{(A)}\ 4\qquad\textbf{(B)}\ 22\qquad\textbf{(C)}\ 26\qquad\textbf{(D)}}\ 30\qquad\textbf{(E)}\ 104$ (Error compiling LaTeX. Unknown error_msg)

Solution

The fraction is equivalent to The answer is clearly