0 votes 0 votes Let X represent the difference between the number of heads and the number of tails obtained when a coin is tossed 6 times. What are possible values of X? Mathematical Logic random-variable + – hem chandra joshi asked Dec 3, 2017 hem chandra joshi 550 views answer comment Share Follow See 1 comment See all 1 1 comment reply Anu007 commented Dec 3, 2017 reply Follow Share 0,2,4,6 1 votes 1 votes Please log in or register to add a comment.
Best answer 1 votes 1 votes P +Q=6 where P is no. of head and Q is no of tales. now; P can have 0,1,2,3,4,5,6; so Corresponding Q will be 6,5,4,3,2,1,0 respectively now |P-Q|=6,4,2,0 Red_devil answered Dec 3, 2017 selected Dec 3, 2017 by joshi_nitish Red_devil comment Share Follow See all 4 Comments See all 4 4 Comments reply hem chandra joshi commented Dec 3, 2017 reply Follow Share Why are you taking mode? 0 votes 0 votes Red_devil commented Dec 3, 2017 reply Follow Share because if we don't take mod we will also get negative values but here we want only difference. 0 votes 0 votes hem chandra joshi commented Dec 3, 2017 reply Follow Share My question is Random Variable can be negative so here we can take its negative value...that part is not clear to me . Plz clear it . 0 votes 0 votes joshi_nitish commented Dec 3, 2017 reply Follow Share by definition difference is always +ve 1 votes 1 votes Please log in or register to add a comment.