There are different 20 circles. What is the number of the greatest possible points with which the circles intersect?
Choose the correct choice from the following choices:  A) 380  B) 200  C) 110  D) 180  E) 200
Maximum points of intersection between n different circles = n*(n - 1) = 20*19= 
<gadget id="calculator">20*19</gadget>
<output>380</output>
380   380nswer: 380
<result>A</result>
There are different 20 circles. What is the number of the greatest possible points with which the circles intersect?