Lottery websites can be approved by AdSense, but they must adhere to certain guidelines and policies set by Google. However, it is important to note that Google's policies regarding gambling and lotteries are quite strict and vary by country. Websites promoting gambling or lotteries may be subject to additional scrutiny during the AdSense approval process. If your website has been rejected multiple times, it is advisable to review Google's policies and make any necessary changes to ensure compliance before reapplying.