Chromatic number

Consider the following graph:

Which of the following will represents the chromatic number of the graph?

3Comments
Akshay Saxena @akshay0612
5 Oct 2017 09:45 pm

4?

Pun m @punm
6 Oct 2017 12:21 am

4

shivani @shivani1234
6 Oct 2017 04:35 pm

4 colors are sufficient here