An undirected graph G has bit strings of length 100 in its vertices and there is an edge between vertex u and vertex v if and only if u and v differ in exactly one bit position. Determine the ratio of the chromatic number of G to the diameter of G?

An undirected graph G has bit strings of length 100 in its vertices and there is an edge between vertex u and vertex v if and only if u and v differ in exactly one bit position. Determine the ratio of the chromatic number of G to the diameter of G? Correct Answer 1/50

For the given condition we can simply design a K-Map and mark an edge between every two adjacent cells in K-map. Hence, that will give us a Bipartite graph and chromatic number for this = 2. Hence the ratio is 2/n=2/100=1/50 and the given graph is actually a hypercube graph.

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Two n bit binary strings, S1 and S2 are chosen randomly with uniform probability. The probability that the Hamming distance between these strings (the number of bit positions where the two strings differ) is equal to d is