Question

A dice is thrown twice. What is the probability that
a) 5 will not come up either time?
b) 5 will come up at least once?

Answer 1

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Answer 2

n(s)=36

n(E1)=25

p(E1)=n(E1)/n(s)

=25/36

n(e2)=11

p(e2)=n(e2)/ns

=11/36