waecmaths question:
A box contains 5 red, 6 green and 7 yellow pencils of the same size. What is the probability of picking a green pencil at random
Option A:
$\tfrac{1}{6}$
Option B:
$\tfrac{1}{4}$
Option C:
$\tfrac{1}{3}$
Option D:
$\tfrac{1}{2}$
waecmaths solution:
$\begin{align} & \Pr (event)=\frac{no\text{ of expected outcome}}{\text{Total number of possible outcome}} \\ & \Pr (Green)=\frac{6}{18}=\frac{1}{3} \\\end{align}$
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