Question

Brianna rolls two number cubes labeled 1–6. What is the probability that Brianna rolls a sum of 5?

Answer 1

Answer: $\dfrac{1}{9}$

Step-by-step explanation:

Given

Brianna roll two cubes labeled 1-6

To get a sum of 5, sample space is

$n(s)=\{(1,4),(4,1),(2,3),(3,2)\}$

No of the elements in $n(s)$ is 4

The total outcomes possible is 36

$\therefore \text{Probability }P=\dfrac{4}{36}\\\Rightarrow \dfrac{1}{9}$