Using the "normal" schedule, and assuming you are billing on the last day of the...

 Understanding the Requirement:

The "normal" schedule duration is 1072 days for Activity 1000 (General Conditions).

Billing occurs at the end of each month for the previous month.

Partial months are included in billing cycles.

 Total Project Duration in Months:

Total days: 1072.

Convert to months: 107230.44≈35.2\frac{1072}{30.44} \approx 35.230.441072​≈35.2 months.

Include partial months, which adds 1 additional invoice.

 Total Invoices:

Full months: 35.

Partial months: 7 (assuming each partial month is rounded up to include invoicing).

Total invoices = 35+7=4235 + 7 = 4235+7=42.

 PSP Principles Cross-Verification:PSP guidelines emphasize accurate conversion of schedule durations into calendar billing periods for effective cash flow management (Ref: PSP Study Guide, Chapter 2B: Schedule Output and Deliverables).