Question

A fair die is rolled 5 times find the probability that there are no sixes

Answer 1

s = { 1,2,3,4,5,6
1,2,3,4,5,6
1,2,3,4,5,6
1,2,3,4,5,6
1,2,3,4,5,6}
n (s)= 30
A = {1,2,3,4,5
1,2,3,4,5
1,2,3,4,5
1,2,3,4,5
1,2,3,4,5}
n (A) = 25
P (A) = n (A)/n(s)
= 25/30
= 5/6