MathDB

7

Part of 2009 Iran Team Selection Test

Problems(1)

Iran TST 2009-Day3-P1

Source:

5/16/2009
Suppose three direction on the plane . We draw 11 11 lines in each direction . Find maximum number of the points on the plane which are on three lines .
inductioninequalitiescombinatorics proposedcombinatorics