Forgetting the password to your iPad can be a frustrating experience, especially if you need to reset it to factory settings. In such cases, there are a few methods you can try to achieve this:

1. Use iTunes: Connect your iPad to a computer with iTunes installed. Put the device into recovery mode by following the steps provided by Apple. Once in recovery mode, you can choose the option to restore your device to factory settings.
2. Find My iPad: If you have enabled the 'Find My iPad' feature and remember your Apple ID and password, you can use this method to remotely erase your device.
3. Contact Apple Support: If the above methods don't work for you, reaching out to Apple Support is recommended. They may ask for proof of ownership before assisting you in resetting your iPad.

It's important to note that resetting your iPad to factory settings will erase all data on the device, so make sure to back up any important information before proceeding.