0 0 votes How many to divide 2t objects? A. 2 groups of t each B. t groups of 2 each Mathematical Logic combinatory engineering-mathematics + – Anshul Shankar 1.6k views answer comment Share Follow Print See all 8 Comments 8 8 Comments reply Show 5 previous comments ankitgupta.1729 commented Apr 7, 2018 reply Follow flag @sonam , for 2nd part , I got [C(2t,2)*C( 2t-2 , 2)* C(2t-4 , 2)*.....C(2,2) ] / (t!) .. I think, it is correct and ur answer is also correct...Then how to prove that [C(2t,2)*C( 2t-2 , 2)* C(2t-4 , 2)*.....C(2,2) ] = (2t)!/(2)t...Could u please help.. 0 0 replyShare minal commented Apr 8, 2018 reply Follow flag by putting some values :P i am also finding ..wait :) 0 0 replyShare Shobhit Joshi commented Nov 29, 2018 reply Follow flag Assuming the objects are labeled : If the group's are not labeled : 1. C(2t, t)*C(t, t) = C(2t, t) 2. C(2t, 2)*C(2t-2, 2)*...C(2, 2) = ((2t)!)/(2^t) If the groups are labeled : 1. C(2t, t)*(2!) 2. ((2t)!*(t!))/(2^t) Pls Correct me if I'm wrong 0 0 replyShare Please log in or register to add a comment.