Small question: In the first case, why aren’t we considering bead and necklace logic that flag can be turned upside down! Then it should be divided by 2!.
Hi Sir,
I needed help with a question similar to the flag one , but instead we have a disc of 5 equal sectors , that needs to be coloured with red, green and yellow , and adjacent sectors cannot have the same colour. And a variant where the sectors the with angles 70,71,72,73,74, and the same conditions , this will make the sectors distinct but the first and last one can not have the same colour.
How do we approach these questions Sir?
Thank you
CAT-holics 
Hi J,
Your blog is just Wonderful.
Small question: In the first case, why aren’t we considering bead and necklace logic that flag can be turned upside down! Then it should be divided by 2!.
Thanks
Because a flag has a specific end which is attached to the pole, so changing the orientation gives us a totally different flag!
See this link for some examples 🙂 http://www.newsonaut.com/countries-with-almost-nothing-in-common-but-their-flags
regards
J
Hi Sir,
I needed help with a question similar to the flag one , but instead we have a disc of 5 equal sectors , that needs to be coloured with red, green and yellow , and adjacent sectors cannot have the same colour. And a variant where the sectors the with angles 70,71,72,73,74, and the same conditions , this will make the sectors distinct but the first and last one can not have the same colour.
How do we approach these questions Sir?
Thank you