At a conference, 10 members shook hands with each other before and after the meeting. How many hand shakes occurred before?A. 90B. 100C. 45 D. 5√4 0 0 votesArticle Rating Subscribe LoginNotify of new follow-up commentsnew replies to my comments Label {} [+] Name* Email* Label {} [+] Name* Email* 0 Comments Oldest Newest Most Voted Inline FeedbacksView all comments
