Solution:The pattern followed here is :(1st number)² + (3rd number)² = 2nd number
(8, 388, 18) → (8)² + (18)² ⇒ 64 + 324 = 388
(11, 137, 4) → (11)² + (4)² ⇒ 121 +16 = 137
Similarly,
(14, 221, 5) → (14)² + (5)² ⇒ 196 + 25 = 221
Hence, "(14, 221, 5)" is the correct answer.