The correct option is B 39
Given number: 3325By grouping the numbers, we get ¯¯¯¯¯¯33 ¯¯¯¯¯¯25.
575¯¯¯¯¯¯33 ¯¯¯¯¯¯252510782574976
So, 3325 - 76 is a perfect square.⇒572=3325−76Then, 582=3364
The least number that must be added to 3325 to get a perfect square = 3364−3325=39.