SOLUTION: A fair 10-sided die is rolled and the result observed. Let A be the event that a number observed is at least a 4. What is P(A)? Type your answer as a reduced fraction.

Question 1165847:
A fair 10-sided die is rolled and the result observed. Let A be the event that a number observed is at least a 4. What is P(A)? Type your answer as a reduced fraction.

Answer by ikleyn(52943) (Show Source): You can put this solution on YOUR website!
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"At least a 4"  means   4, 5, 6, 7, 8, 9 or 10:  any of  7  possible outcomes.


Therefore,   P(at least 4) =  =  = 70%.    ANSWER

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