0 votes 0 votes How this is true ? $_{r}^{\frac{n(n-1)}{2}}\textrm{C} = 2^{\frac{n(n-1))}{2}}$ Graph Theory engineering-mathematics + – PEKKA asked Jan 2, 2017 PEKKA 263 views answer comment Share Follow See all 4 Comments See all 4 4 Comments reply Sushant Gokhale commented Jan 3, 2017 reply Follow Share Not getting the question. 0 votes 0 votes saurabh rai commented Jan 3, 2017 reply Follow Share some information is missing i think it should be r=n(n-1)/2 ∑ n(n-1)/2 Cr =2 n(n-1)/2 r=0 1 votes 1 votes PEKKA commented Jan 3, 2017 reply Follow Share yes. can u pls tell how it is true? 0 votes 0 votes saurabh rai commented Jan 3, 2017 reply Follow Share it is like all possible subset of n(n-1)/2 0 votes 0 votes Please log in or register to add a comment.