Couplings is like same with combination…
now here’s the formula of getting the combination:
where n is the number of the things you choose from
and r is the number of thing you choose from them
n=17 Seventeen members
r = 2 (the couplies)
and the answer is this……
136 couples are available in Seventeen
I still remember you.
And all the things we used to do.
Chen and Lay got shocked when Kris appears and smiling behind them