If 10 lines are drawn in a plane such that no two of them are parallel and no three are concurrent, then the total number of points of intersection are ……………….
A. 45
B. 40
C. 10!
D. 210
Answer:A
If 10 lines are drawn in a plane such that no two of them are parallel and no three are concurrent, then the total number of points of intersection are ……………….
A. 45 B. 40 C. 10! D. 210