Question

.A dice is rolled,what is the probability of getting a prime number on the upper face?

Answer 1

Answer:

2/3

Step-by-step explanation:

Prime number in a dice=1,2,3,5

Total number of outcomes=6(123456)

Number of favourable outcomes=4

P(e)=4/6

=2/3

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Answer 2

Given,

• A die is rolled.

To find,

We have to find the probability of getting a prime number on the upper face.

Solution,

We can easily find the probability of getting a prime number on the upper face by using the following formula

Probability = Favorable outcomes / Total number of outcomes

When a die is rolled, total number of outcomes = 6

                                                      Sample space = {1,2,3,4,5,6}

Number of cases of getting a prime number = {2,3,5}

                           Number of favorable cases = 3

P( of getting a prime number on the upper face) = 3/6

P( of getting a prime number on the upper face) = 1/2

Hence, if a die is rolled then the probability of getting a prime number on the upper face is 1/2.