Find P(roll 2 or roll 5) on a single die.
These events are mutually exclusive. P(2) = 1/6, P(5) = 1/6.
P(2 or 5) = P(2) + P(5) = 1/6 + 1/6 = 2/6 = 1/3.
No need to subtract P(2 ∩ 5) because it is zero.
Math Fundamentals18 sections · 814 units
Open in CourseExample - Mutually Exclusive
(Rolling 2 or 5)