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You have a 12-sided cube numbered from 1 to 12. What is the probability of rolling a 5?

A. [tex]\frac{1}{12}[/tex]
B. 50%
C. 75%
D. [tex]\frac{1}{10}[/tex]


Sagot :

To determine the probability of rolling a 5 on a 12-sided cube numbered from 1 to 12, let's follow a step-by-step approach:

1. Identify the total number of possible outcomes: Since the cube is 12-sided, there are 12 different numerical outcomes that can result from rolling the cube. Therefore, the total number of possible outcomes is 12.

2. Identify the number of favorable outcomes: We are interested in the specific event of rolling a 5. Since there is exactly one side of the cube labeled with the number 5, there is only 1 favorable outcome.

3. Calculate the probability: Probability is calculated by dividing the number of favorable outcomes by the total number of possible outcomes.

[tex]\[ \text{Probability} = \frac{\text{Number of favorable outcomes}}{\text{Total number of possible outcomes}} \][/tex]

In this case:

[tex]\[ \text{Probability of rolling a 5} = \frac{1}{12} \][/tex]

Therefore, the probability of rolling a 5 on a 12-sided cube is [tex]\(\frac{1}{12}\)[/tex].

Among the given options:

1. [tex]\(\frac{1}{12}\)[/tex]
2. 50%
3. 75%
4. [tex]\(\frac{1}{10}\)[/tex]

The correct answer is:

[tex]\(\frac{1}{12}\)[/tex].