225,751 views
29 votes
29 votes
A coin is flipped, and a number cube is rolled. What is the probability of getting heads on a coin and getting a number greater than five on the number cube?A) 1/12B) 1/6C) 1/4D) 1/3

User Joel
by
2.6k points

1 Answer

19 votes
19 votes

The two events are independent. This means that the combined probability can be calculated using the formula:


P(A\text{ }and\text{ }B)=P(A)\cdot P(B)

The probability of getting a head on a coin flip is given to be:


P(A)=(1)/(2)

while, assuming the number cube has 6 sides, the probability of getting a number greater than five will be:


P(B)=(1)/(6)

Therefore, the probability of both events will be:


\begin{gathered} P(A\text{ }and\text{ }B)=(1)/(2)\cdot(1)/(6) \\ P(A\text{ }and\text{ }B)=(1)/(12) \end{gathered}

OPTION A is correct.

User Tgk
by
2.8k points