Adsense add not showing

Some of my pages not showing google adsense ads. but some are showing. Can any one suggest what is the reasong?

 

Check your code. Perhaps the web browser is not loading the code.

 

Ensure you are placing the code within the correct area of the website, and you are copying the complete code (no open tags etc)

 

It can take up to 10 mins for your adsense code to show. Have you recently added the code to your site ? If yes, i wouldnt worry to much and just get on with other things

 

But some pages are showing the ads, only few are not showing.

 

How long ago did you upload your adsense? Give it some time and everything will be fine. If not, go back to your campaign, make sure everything is correct. Then copy and paste the code into your page without modifications within the body tags.

 

thanks for your replays