Probability question Fair die

Question

A fair die is rolled four times. What is the probability that it comes up 5

 at least once? Write your answer as a fraction or a decimal, rounded to four decimal places.

Answer 1

1- (5/6)^4

=1- 625/1296

= about 1- .4823

= .5177 = 51.77%

Answer 2

P(at least one 5) = 1 - P(no 5s) = 1 - (5/6)⁵

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