Pascal's identity, first derived by Blaise Pascal in 17th century, states that the number of ways…

A permutation is an arrangement of some elements in which order matters. In other words a Permutation…

Spanning tree of a graph is a subgraph of it which forms a tree and contains…

From the First Principle of Counting we have arrived at the commutativity of addition, which was expressed in convenient…

A rooted tree is a tree with a special vertex labelled as the "root" the of tree.…

Chromatic number of a graph is the minimum value of kk for which the graph is k-colorablek-colorable. In other…

Not all graphs are planar. If there are too many edges and too few vertices,…

When is it possible to draw a graph so that none of the edges cross?…

Certain graph problems deal with finding a path between two vertices such that each edge…

An Euler graph may be defined as- Euler Graph Example- The following graph is an…