Question 11

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waecmaths question: 

Convert 101101two to a number in base ten

Option A: 

61

Option B: 

46

Option C: 

45

Option D: 

44

waecmaths solution: 

$\begin{align}  & {{101101}_{2}}=1\times {{2}^{5}}+0\times {{2}^{4}}+1\times {{2}^{3}}+1\times {{2}^{2}}+0\times {{2}^{1}}+1 \\ & {{101101}_{2}}=32+0+8+4+1=45 \\\end{align}$

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