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0 votes
5.8k views
in Mathematics by (68.5k points)

If two dice are thrown and at least one of the dice shows 5, then the probability that the sum is 10 or more is

a. 1/6

b. 4/11

c. 3/11

d. 2/11

1 Answer

+1 vote
by (45.7k points)
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Best answer

Correct option c. 3/11

Explanation:

n(S) = 36 

A = {(1,5,) , (2,5), (3,5) (4,5) (5,5), (6,5), (5,1), (5,2), (5,3), (5,4), (5,6)} 

B = {(5,5), (6,4), (4,6) , (6,5), (5,6), (6,6)} 

A ∩ B = {5,6,), (6,5), (5,6)}

P(B/A) = 3/11

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