Discrete Probability
Let be the number of televisions for a household chosen randomly. It is given that
If , what is the value of ?
If a 20-sided fair die with sides distinctly numbered 1 through 20 is rolled, the probability that the answer is a perfect square can be expressed as where and are coprime positive integers. What is the value of ?
In a health examination of the employees at Acme Corporation, the numbers of employees with blood type and were and , respectively, and the remaining employees have blood type . If one of the employees is selected uniformly at random, the probability that the person's blood type is or can be expressed as , where and are coprime positive integers. What is
Raoul chooses an integer uniformly at random from to The probability that his number is or can be expressed as , where and are coprime positive integers. What is the value of
In a group of students, have black hair, have blond hair, have red hair, and the remaining have brown hair. If a student is selected uniformly at random from the group, the probability that the student has black hair or blond hair can be expressed as , where and are coprime positive integers. What is the value of
Details and assumptions
Each student has exactly one hair color.