Number of adsense ads allowed on a page

Up to three ad units may be displayed on each page. A maximum of two Google AdSense for search boxes,three referral units,in addition to the ad units, search boxes, and link units may be placed on a page. AdSense for search results pages may show only a single ad link unit in addition to the ads Google serves with the search results. No other ads may be displayed on your search results page. Google ad or Google search box should not be displayed in a pop-up, pop-under, or in an email. No portion of the ads should be obscured by any elements on a page If your page has no content you are not permitted to place Google ads. No Google ads may not be placed on pages published specifically for the purpose of showing ads,even if the page content is relevant.