MathDB
Base numbers

Source:

January 11, 2009

Problem Statement

The symbol 25b 25_b represents a two-digit number in the base b b. If the number 52b 52_b is double the number 25b 25_b, then b b is: <spanclass=′latex−bold′>(A)</span> 7<spanclass=′latex−bold′>(B)</span> 8<spanclass=′latex−bold′>(C)</span> 9<spanclass=′latex−bold′>(D)</span> 11<spanclass=′latex−bold′>(E)</span> 12 <span class='latex-bold'>(A)</span>\ 7 \qquad <span class='latex-bold'>(B)</span>\ 8 \qquad <span class='latex-bold'>(C)</span>\ 9 \qquad <span class='latex-bold'>(D)</span>\ 11 \qquad <span class='latex-bold'>(E)</span>\ 12
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