Discussion
A dice is rolled twice. What is the probability of getting sum 9?
Answer: C
Two rolls give 36 outcomes. Those totalling 9 are
\[ (3,6),\ (4,5),\ (5,4),\ (6,3) \]
\[ P = \frac{4}{36} = \frac{1}{9} \]
The order of the two rolls matters, so \( (3,6) \) and \( (6,3) \) are separate outcomes; treating them as one would halve the count.
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