In new blogger the feature of inline ads have been added i mean we can show only google ads (adsense) after posts. But we can't show ads before posts until we edit a simple word in our template. After than you will be able to put adsense and other ads before and after ads.

Step 1.Go to template>edit html.
Step 2.Scroll down to reach the 'main wrapper' division.

Step 3.Change the values of 'Show add element' to yes and 'locked' to false.



Step 4.Have you done it successfully ? Ok, now go to page element and put your codes. Enjoy

Code : Blogger whale