Sync with iTunes again. Connect the iPad to your computer and launch iTunes. If it auto syncs - let the process complete. Click on your iPad name on the left side of the iTunes window under the Devices heading. Click on the apps tab in iTunes on the right. Then click the Sync Apps heading. Check all of the apps that you want to sync and the click on Sync - or Apply - in the lower right corner of iTunes.
If you are still missing apps - they can be downloaded agin for free in the App Store on the iPad - as long as you use the same Apple ID and iTunes account that you purchased them with.
I have the same problem. I disconnected and synced, and I can see them in itunes,
Disconnected from what? the computer? Did you connect to the computer again, launch iTunes and then do as I described above?
You have selected all of the apps to sync - put checkmarks in all of the boxes next to the app names and have the Sync Apps heading checked as well?
Do you have restrictions set on the iPad? Settings>General>Restrictions>On?
Are you signed into the correct iTunes account on the iPad and the computer?