Find the greatest number which leaves the same remainder when it divides 25, 57 and 105.	Choose the correct answer:
A) 18
B) 8
C) 12
D) 16
E) none of these

Rationale: 105 - 57 = 48 57 - 25 = 32 105 - 25 = 80 the h . c . f of 32 , 48 and 80 is 16 . answer : d
Answer: D