The cardinally of the power set of $$\left\{ {0,1,2,\,\,....,\,\,10} \right.\left. \, \right\}$$ is _____________.

The number of divisors of $$2100$$ is ___________.

A graph is self-complementary if it is isomorphic to its complement. For all self-complementary graphs on $$n$$ vertices, $$n$$ is

In a connected graph, bridge is an edge whose removal disconnects a graph. Which one of the following statements is true?