S1 : I teach algorithms and maths.

S2 : My professor teaches maths,

electronics and computer

science.

S3 : I have a student of maths.

S4 : Algorithm is a part of

computer science.

S5 : Maths students know computer

science.

What would be the chromatic

number of a graph, vertices of which

are the actors/entities that are

involved in the sentences S1 to S5

and edges-to represent the

associations/relationships amongst

the entities/actors as expressed in the

sentences S1 to S5 above ?

(A) 2

(B) 3

© 4

(D) None of these

You'll need to show what you've done/tried so far. Nobody will do your work for you, but they are likely to help if you show you've made an effort.