A kindergarten teacher assigns chores to her students on a weekly basis. One student works on each task, and each student is assigned only one task a week. During the first week of school, there were 20 students and 7 tasks. Also, 4 of the students had brown hair.
a. What is the probability that a student would not be assigned a chore?
b. What is the probability that a student had brown hair?
c. What is the probability that a student had brown hair or had a chore?
d. What is the probability that a student had brown hair and a chore?

Question

A kindergarten teacher assigns chores to her students on a weekly basis. One student works on each task, and each student is assigned only one task a week. During the first week of school, there were 20 students and 7 tasks. Also, 4 of the students had brown hair. 
a. What is the probability that a student would not be assigned a chore? 
b. What is the probability that a student had brown hair? 
c. What is the probability that a student had brown hair or had a chore? 
d. What is the probability that a student had brown hair and a chore?

Quizplus · Accepted Answer

The Answer of A kindergarten teacher assigns chores to her students on a weekly basis. One student works on each task, and each student is assigned only one task a week. During the first week of school, there were 20 students and 7 tasks. Also, 4 of the students had brown hair. 
a. What is the probability that a student would not be assigned a chore? 
b. What is the probability that a student had brown hair? 
c. What is the probability that a student had brown hair or had a chore? 
d. What is the probability that a student had brown hair and a chore?

A Kindergarten Teacher Assigns Chores to Her Students on a Weekly