Rolling a number cube once what is the probability of rolling a number greater than 4 ?
4/6 = 2/3
the answer is 2/3
To find the probability of rolling a number greater than 4 on a number cube, we need to determine how many favorable outcomes there are and divide it by the total number of possible outcomes. Let's break it down:
A number cube, also known as a fair six-sided die, has six possible outcomes: {1, 2, 3, 4, 5, 6}.
Now we need to determine how many of these outcomes are favorable, meaning they are numbers greater than 4. The numbers greater than 4 are {5, 6}.
Therefore, there are 2 favorable outcomes out of a total of 6 possible outcomes.
To calculate the probability, we divide the number of favorable outcomes by the total number of possible outcomes:
Probability = Number of Favorable Outcomes / Total Number of Possible Outcomes
Probability = 2/6
Simplifying the fraction gives us:
Probability = 1/3
Hence, the probability of rolling a number greater than 4 on a number cube once is 1/3.
"Greater than 4" means either a 5 or 6. The probability of either is 1/6.
Either-or probabilities are found by adding the individual probabilities.
1/6 + 1/6 = ?