Question
A die is rolled twice. Find the probability that:5 will come up exactly one time.
✓
Answer
Favourable cases are: (1, 5), (2, 5), (3, 5), (4, 5), (5, 5), (6, 5), (5, 1), (5, 2), (5, 3), (5, 4), (5, 6)
= 11
$\therefore\ $Probability that 5 will come at least once
$=\frac{11}{36}$
= 11
$\therefore\ $Probability that 5 will come at least once
$=\frac{11}{36}$
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