Answer :
tests 1,2,3,4,5,6 each test has a 1/6 probability of being selected.
persons b,m,s,d,w ; there are 5 people to take a test.
b,m,s,d,w1,2,3,4,5,6 hmmmm
C(5,2) ?!------- looks to be right if i could determine what the ? was 6^5
its prolly 720 ways
persons b,m,s,d,w ; there are 5 people to take a test.
b,m,s,d,w1,2,3,4,5,6 hmmmm
C(5,2) ?!------- looks to be right if i could determine what the ? was 6^5
its prolly 720 ways