Find P(rolling 2 or 5) with one number cube.
A. 1
B. 1/6
C. 1/3
D. 1/2
woah this question is old
C.1/3
To find the probability of rolling a 2 or a 5 on a number cube (also known as a fair six-sided die), we need to determine the number of favorable outcomes (rolling a 2 or a 5) and divide it by the total number of outcomes.
Number of favorable outcomes: There are 2 possible outcomes (rolling a 2 or a 5) out of 6 possible outcomes.
Total number of outcomes: There are 6 possible outcomes when rolling a number cube (rolling a 1, 2, 3, 4, 5, or 6).
Therefore, the probability of rolling a 2 or a 5 is:
Number of favorable outcomes / Total number of outcomes
= 2 / 6
= 1/3
So, the correct answer is C. 1/3.
To find the probability of rolling a 2 or 5 with a number cube, we first need to determine the number of favorable outcomes and the total number of possible outcomes.
In this case, the number of favorable outcomes is 2 because rolling a 2 or 5 are the only favorable outcomes.
The total number of possible outcomes when rolling a number cube is 6 because there are 6 faces on the cube labeled with the numbers 1 through 6.
Therefore, the probability of rolling a 2 or 5 is given by the fraction:
Probability = (Number of favorable outcomes) / (Total number of possible outcomes)
Substituting the values, we get:
Probability = 2 / 6
Simplifying the fraction, we have:
Probability = 1 / 3
So, the correct answer is C. 1/3.