Correct Answer - Option 1 : 226
LOGIC: (First Number)2 + 1 = Second Number
13 : 170 :: 15 ? :: 17 : 290
The pattern follows here is:
In 13 : 170 →
⇒ 132 + 1 = 170
In 17 : 290 →
⇒ 172 + 1 = 290
Similarly,
In 15 : ? →
⇒152 + 1 = 226
Hence, the correct answer is 226.