Choose the correct option whose group numbers follow the same pattern as that of the pattern in two groups of numbers given in the question.

11 : 121 : 110 :: 15 : 225 : 210 ::

The logic followed here is:

11 : 121 : 110 → 121 - 11 = 110

And,

15 : 225 : 210 → 225 - 15 = 210

So, checking each option one by one:

Option 1) 9:81:70 → 81 - 9 = 72 ≠ 70

Option 2) 19:361:342 → 361 - 19 = 342

Option 3) 17:288:272 → 288 - 17 = 271 ≠ 272

Option 4) 16:225:239 → 225 - 16 = 209 ≠ 239

Hence, "Option 2" is the correct answer.