Blue Bridge Cup - day of week

1. subject

2. Ideas The use of Excel Calculate the interval days It's being used today Excel Ask this question

3. step

First step Let's input the data into the table first

 

Enter two data We pull down until 2011 year

 

Because of the limited space It's time to show 1987 year

The second step ： Select these cells ---> Right click to format the cell

Set the cell after （ Part of the ）

 

  The third step ： We make use of Excel Search function Click Find and select

  Finding nine cells is the answer （ The search process must change the search range to a value , Or I can't find it , I don't really understand ）