Every student in your history class is requite to present a project in front of the class . Each day , 4 students make their presentations in an order chosen at random by the teacher . You make your presentation on the first day. a ) What is the probability that you are chosen to be the first or second presenter on the first day? b) What is the probability that you are chosen to be second or third one the first day?. Compare your answer with that in part ( a )

Question

phi · Answer

isn't the answer ½ ? (for both part a   and b)

anonymous · Answer

I'm confuse 2 difference answer http://openstudy.com/study#/updates/572ee741e4b06f843e1e4f15