Question 6

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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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