Correct Answer - Option 4 : 17 - 134
The pattern is follows,
All the number at the right are completely divisible by the number on the left side.
27 – 81: 81 is divisible by 27.
15 – 105: 105 is divisible by 15.
18 – 90: 90 is divisible by 18.
Only 134 is the number that is not divisible by 17.
Hence, 17 - 134 is the correct answer.