Select the wrong term in the following number series:

3, 4, 12, 40, 103, 228​​

​3, 4, 12, 40, 103, 228

Logic: Each term is the square of  number (0, 1, 3, 6, 10, 15) plus 3. Difference between square number is (1, 2, 3, 4, 5). 

0² + 3 = 0 + 3 = 3

1² + 3 = 1 + 3 = 4 

3² + 3 = 9 + 3 = 12 

6² + 3 = 36 + 3 = 39 (but in series it is 40)

10² + 3 = 100 + 3 = 103

15² + 3 = 225 + 3 = 228

So, the wrong term is 40.

Thus, the correct option is: (c)