Hello, My brother get approved a adsense account and he is living in another city so i don't think that it will create problem, am I right? can i place his adsense code to my websites with my adsense code placed or should i place in new domain? Thanks
No, there is no problem in that. Just make sure that you dont put your adsense ads and your brother's adsense ads on the same page
Did you mean place two code in one page, one from your brother and another from yours? If so, I do not think it could have a problem but you have to manage the number of ads for not over 6 ads per page. Only disadvantage I could think of is, if one of the two account has a problem then another one will be suffered as well, cannot be avoided anyway. Those two accounts would be defined as "related account" from Google perspective when problems arisen.
Great i think you must be using one website for one account google will not approve it if u apply for same domain on two accounts