Question

if a dice is rolled 2times,what is the probability getting a number 3 or 4 ?

Answer 1

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Answer 2

Given,

Total possible outcomes = 36

To Find,

The probability of getting a number 3 or 4 =?

Solution,

Total possible outcomes =   (1, 1) (1, 2) (1, 3) (1, 4) (1, 5) (1, 6),(2, 1) (2, 2) (2, 3) (2, 4) (2, 5) (2, 6),(3, 1) (3, 2) (3, 3) (3, 4) (3, 5) (3, 6),(4, 1) (4, 2) (4, 3) (4, 4) (4, 5) (4, 6),(5, 1) (5, 2) (5, 3) (5, 4) (5, 5) (5, 6),(6, 1) (6, 2) (6, 3) (6, 4) (6, 5) (6, 6)

Total number of outcomes  = 36

Number of outcomes having 3 or 4 = 20

Probability of getting a number 3 or 4 = 20 / 36

Probability of getting a number 3 or 4 = 5 / 9

Hence, the probability of getting a number 3 or 4 = 5 / 9