You are rolling two dice at the same time. What is the probability of rolling a sum of 5 or 9?
You can get a 5 by rolling :
1 and 4
2 and 3
3 and 2
4 and 1
You can get a 9 by rolling :
3 and 6
4 and 5
5 and 4
6 and 3
There are 36 possible outcomes, hence your probability is \(\frac{4\cdot2}{36}=\boxed{\frac29}\)
Answer:
C
Step-by-step explanation:
To find the probability we use the mutually exclusive probability formula P(A) + P(B). The probability of getting a sum of 5 is
1
/9
and the probability of getting a sum of 9 is
1
/9
. The sum is
2
/9