Geometry

Question Analysis  
This question involves arranging letters where repetition affects the count.  

Key Concept Explanation  
If a word has repeated letters, the number of distinct permutations is:  
 
where n = total letters, k = number of repetitions.  

Step-by-Step Solution  
1. "LOOP" has 4 letters, with "O" repeated twice.  
2. Total permutations (if all letters were unique) = 4! = 4 x 3 x 2 x 1 = 24.  
3. Adjust for repetition: