One particular high school encourages students to donate blood. the high school gym is set up for purpose. the distribution of blood type in north america is as follows.
(a) what is the probability that the first two people in the line up have the same type of blood?
ANSWER: I donn't know how many people are in the line. so how can I answer this question.
(b) what us the probability thar none of the first five people in the line up have type AB blood?