In following question, a number series is given with one term missing. Choose the correct alternative that will same pattern and fill in the blank spaces. - 225, 336, 447, , 669, 7710

Answer: C. 558

The first  two digits of the numbers in the given series are 22, 33, 44,..., 66, 77.
The third digit of the numbers from the series 5, 6, 7, ...., 9, 10.
So, the first two digits of the missing number are 55 and the third digit is 8.
.'. Missing number is 558.