I still don't understand the odds and probability.

1. In a deck of 52 playing cards (jokers not allowed), how many five-card poker hands containing four of a kindare possible?

2. Ink Inc., a publishing firm, offers its 899 employees a cafeteria approach to benefits, in which employees can enroll in the benefit plan of their choice. Seven hundred thirteen employees have health insurance, 523 have dental insurance, and 489 have both health and dental insurance.

(a) What is the probabilitypthat one of the employees has either health or dental insurance?

p=

(b) What is the probabilitypthat one of the employees has health insurance but not dental insurance?

p=

3. In this exercise, use the following information: After examining their clients' records, Crashorama Auto Insurance calculated the probabilities in the figure below.Miles/year < 10,00010,000 miles/yr < 20,00020,000 miles/yrAccident0.060.110.26No accident0.210.150.21

(a) Find the probabilitypthat the client drives less than 10,000 miles/year and has an accident.

p=

(b) Find the probabilitypthat a client drives less than 10,000 miles/year or has an accident.

p=

(c) Find the probabilitypthat a client does not drive less than 10,000 miles per year and does not have an accident.

p=

4. (a) How many hearts are there in a deck of cards?

(b) What fraction of a deck is hearts?

5. Ifp(E) =2/3, findo(E). (Simplify the odds ratio.)

o(E) =: