What is the probability of rolling less than 4 on a standard cube and then getting tails on a coin flip?
1 Answer
Jan 16, 2018
Explanation:
Cube
There are the numbers 1-6 on the number cube. There are 3 numbers that are less than 4: 1, 2, 3. This means there are 3 out of the 6 options that can satisfy the "less than 4" requirement:
Coin
There are 2 options on the coin - heads, tails. And so the probability of getting tails is:
Putting it together
The roll of the cube and the flip of the coin are independent, and so we multiply the probabilities to get the probability of both happening: