1 votes 1 votes i think 14 is the correct answer....please check...??? hs_yadav asked Jan 14, 2018 hs_yadav 350 views answer comment Share Follow See all 5 Comments See all 5 5 Comments reply Show 2 previous comments nandini gupta commented Jan 14, 2018 reply Follow Share please expain. 0 votes 0 votes srestha commented Jan 14, 2018 reply Follow Share inorder traversal So, combinations of elements are not required Only sorted sequence is required $\frac{\binom{2n}{n}}{n+1}$=14 0 votes 0 votes Shubhanshu commented Jan 14, 2018 reply Follow Share Yes, 14 is the correct answer. They have taken all possible Binary Trees. 0 votes 0 votes Please log in or register to add a comment.