Question 47

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waecmaths question: 

Given the set A ={2, 4, 6, 8} and B = {2, 3, 5, 9}. 

If a number is selected at random from set B. what is the probability that the number is prime

Option A: 

1

Option B: 

¾

Option C: 

 ½

Option D: 

 ¼

waecmaths solution: 

$\begin{align}  & \text{Prime numbers in set B are 2, 3 } \\ & \Pr (selecting\text{ }a\text{ }prime\text{ }number\text{ }from\text{ }set\text{ }B)=\frac{2}{4}=\frac{1}{2} \\\end{align}$

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