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Question

In a simultaneous throw of two dice, what is the probability of getting a total of 10 or 11 ?

A
712
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B
536
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C
16
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D
14
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Solution

The correct option is B 536
Let A denotes the event of getting a total of 10 and B denotes the event of getting a total of 11.
Total outcomes = 6×6
A= {(5,5),(6,4),(4,6)}
n(A) = 3
p(A) = 336
B={(6,5),(5,6)}
n(B) = 2
p(B)= 236
p(A or B) = p(A) + p(B)
= 336+236
= 536
Option B is correct.


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