Question

A dice isrolled twice find theprobability that 5will not come up either time

Answer 1

s=( (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), (5,6), (5,6 )
(6,1), (6,2), (6,3),(6,4), (6,5), (6,6) )
n (s) = 36
event A = 5 will not come
A = ( (1,1), (1,2), (1,3), (1,4), (1,6), (2,1), (2,2), (2,3), (2,4), (2,6),(3,1), (3,2), (3,3), (3,4), (3,6), (4,1), (4,2), (4,3), (4,4), (4,6), (6,1),(6,2), (6,3), (6,4), (6,6) )
n (A) =25
p (A) = n (A) = 25
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n (S) 36

p(A) = 25
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36