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What is the correct answer?
4
What is the probability of getting a sum 9 from two throws of dice.
A.
$\frac{1}{3}$
B.
$\frac{1}{9}$
C.
$\frac{1}{12}$
D.
$\frac{2}{9}$
Correct Answer :
B.
$\frac{1}{9}$
Total number of cases = 6*6 = 36
Favoured cases = [(3,6), (4,5), (6,3), (5,4)] = 4
So probability =
$\frac{4}{36}=\frac{1}{9}$
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