Question 16

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waecmaths question: 

The ratio of boys to girls in a class is 5:3, find the probability of selecting at random a girl from the class

Option A: 

$\tfrac{1}{8}$

Option B: 

$\tfrac{1}{3}$

Option C: 

$\tfrac{3}{8}$ 

Option D: 

$\tfrac{3}{5}$

waecmaths solution: 

$\begin{align}  & n(G)=3 \\ & n(B)=5 \\ & \Pr (G)=\frac{3}{8} \\\end{align}$

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