Question

5. All of the following are ways to write 25 percent of N EXCEPT A. (0.25)N B. 10025 N C. 41 N D. 25N

Answer 1

All of them are correct, except B, C, and D. 'A' is the only actually correct one.

Answer 2

Whenever you see the word OF, think of multiplication.

Since you can't really multiply with a percentage, you need to change it to a decimal, or at least a fraction

25% = 0.25 or 1/4

A. (0.25)N 
is the only one that's correct in this case