Why is the probablity of reaction with molecularity higher than three very rare?

Explanation

Molecularity of a reaction is defined as the number of the reacting molecules/species that are colliding simulatenously. As the number increases, the chances of their simultaneous collisions decreases. This means that it is very little probable than more than three reacting molecules may collide simultaneously. In order words, the probability of reactions with molecularity more than three is very rare.