13.   how many worksheets display in the excel window when you create a new blank workbook?

I’d say platform as a service (paas) or application platform as a service (apaas) or platform base service is a category of cloud computing services that provides a platform allowing customers to develop, run, and manage applications without the complexity of building and maintaining the infrastructure typically associated with developing and launching an app.

Iwould try the first option, first then if that didn't work i would try the last option.