STATEMENT -1 : There are 12 points in a plane of which only 5 are collinear , then the number of straight lines obained by joining these points in pairs is `""^(12)C_(2) - ""^(5)C_(2)` .
STATEMENT-2: `""^(n +1)C_(r) - ""^(n-1)C_(r - 1) = ""^(n)C_(r) + ""^(n)C_(r - 2)`
STATEMENT -3 :2n persons may be seated at two round tables , n person seated at each , in `((2n)!)/(n^(2))` in differnet ways.

Answer

F