Q1. There is a certain relationship between the two terms to the left of ::, and the same relationship exists between the two terms to its right. Find which option would replace the question mark. 324 : 289 :: 256 : ?
A 125
B 200
C 225 Correct
D 361
Explanation
The relationship is between consecutive square numbers in descending order. The number 324 is 18 squared, while 289 is 17 squared. Applying the same pattern, 256 is 16 squared, so the matching number must be 15 squared, which is 225. The number 125 is a cube-related value, not the next square. The number 200 is not a perfect square. The number 361 is 19 squared and moves in the opposite direction, so it does not fit the analogy.