Rosario is rolling a six-sided number cube. Rosario rolls the number cube twice. What is the probability that Rosario gets the number one twice in a row?

Question

Philip Gray

Mathematics

16 May, 13:55

Rosario is rolling a six-sided number cube. Rosario rolls the number cube twice. What is the probability that Rosario gets the number one twice in a row?

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Answers (2)

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David Garza · Answer 1

It's a conditional probability

P (getting a given number AND getting again the same number)

P (of getting any number) = 1/6

P (of getting once again the same number) 1/6 x 1/6 = 1/36

Kathryn Ashley · Answer 2

Since these probabilities are independent of each other you would mulitiply the individual probabilities.

First Roll: P (1) = 1/6

Second Roll: P (1) = 1/6

(1/6) * (1/6) = 1/36