iTunes on iPad

Hi all

I have just purchased an iPad and signed up for a new iCloud account. When setting iTunes up, all went well. However when I try and download anything, its asking me to enter three security questions for the protection of my accounts. When I select the first security question for me to set up, the page goes white and I cannot progress. If I select 'Not now', it just goes back to the app that I am trying to download.

Anybody got any suggestions as to how to resolve this

Thanks