Which of the following is the correct shortcut to open the 'Header and Footer' dialog box in MS Word?
A. Ctrl + H
B. Double-click the header area
C. Insert > Header & Footer
D. Alt + H, H
Answer: Option B
Solution (By JKSSB Mock Tests)
Double-clicking the top margin or the header area activates the header/footer. There is no single keyboard shortcut; Alt+H,H opens the Header/Footer gallery, but double-click is most direct. However, the question may expect 'Insert > Header & Footer' but that's not a shortcut. I'll choose the most common method: double-click.
Explanation:
The #NULL! error occurs when a space operator is used between two ranges that do not intersect, such as evaluating =SUM(A1:A2 B1:B2) instead of using a comma operator.
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