n pennies are dropped at random on a carpet. ofr the probability that no two of them overlap? Gian-Carlo Rota 1-dimension:easy to solve (1932-1999) 2-dimension:nothing is known (1979)Gian-Carlo Rota (1932-1999) n pennies are dropped at random on a carpet. the probability that no two of them overlap? 1-dimension: easy to solve 2-dimension: nothing is known (1979)