waecmaths question:
Convert 425 to a base three numeral
Option A:
${{201}_{3}}$
Option B:
${{210}_{3}}$
Option C:
${{211}_{3}}$
Option D:
${{222}_{3}}$
waecmaths solution:
$\begin{align} & {{42}_{5}}=4\times {{5}^{1}}+2={{22}_{10}} \\ & \text{Convert }{{22}_{10}}\text{ to base three} \\ & 3\overline{\left){\begin{align} & 22 \\ & 7\to 1 \\ & 2\to 1 \\ & 0\to 2 \\\end{align}}\right.} \\ & {{42}_{5}}={{211}_{3}} \\\end{align}$
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