There are different 15 circles. What is the number of the greatest possible points with which the circles intersect?  Pick.
A) 390 B) 100 C) 110 D) 180 E) 210
Maximum points of intersection between n different circles = n*(n - 1) = 15*14= 
<gadget id="calculator">15*14</gadget>
<output>210</output>
210   Answer: 210
<result>E</result>
There are different 15 circles. What is the number of the greatest possible points with which the circles intersect?