(D) 16 is the answer How did I get this? 35^2 = 1225 (easy way is using vedic maths)..any number X5^2 would be X(X+1)25... so in this case, 3*4 25 which is 1225. 1225-1 = 1224 Now, actual problem is to check which of the given numbers is exactly divisible by 1224. From divisibility tests, 16 does no...