Final answer:
To highlight duplicate values in the range E3:E10 using conditional formatting, select the range and apply a rule to format duplicate values with green fill and dark green text.
Step-by-step explanation:
To apply a conditional formatting rule to highlight duplicate values in the range E3:E10:
- Select the range E3:E10.
- Go to the 'Home' tab.
- Click on the 'Conditional Formatting' button in the 'Styles' group.
- Select 'Highlight Cells Rules' and then click on 'Duplicate Values'.
- In the 'Duplicate Values' dialog box, choose 'Format only unique or duplicate values'.
- Select 'Duplicate' in the 'Format all' drop-down menu.
- Choose the desired formatting, like 'Green Fill with Dark Green Text'.
- Click 'OK' to apply the conditional formatting rule.