A survey of 82 students was conducted to determine whether or not they held jobs outside of school. The two-way table below shows the number of students by employment status (job, no job) and class (sophomore, junior, senior).

	Job	No job	Total
Sophomore	13	12	25
Junior	13	5	18
Senior	13	26	39
Total	39	43	82

LetS= "the randomly selected student is asophomore"

J= "the randomly selected student is ajunior"

N= "the randomly selected student hasno job"

Find