There are 11 lines in plane. How many intersections (Maximum) can be made?
Choose the correct choice:
A) 55
B) 60
C) 65
D) 70
E) 75
First line will cut all other 10, similarly second will cut 9, and so on   total = 10+9+8+7+6+5+4+3+2+1= 
<gadget id="calculator">10+9+8+7+6+5+4+3+2+1</gadget>
<output>55</output>
55   55NSWER:55
<result>A</result>
There are 11 lines in plane. How many intersections (Maximum) can be made?