Solution:The pattern followed here is :(1st number + 3rd number) - 10 = 2nd number
(122, 136, 24) → (122 + 24) - 10 ⇒ 146 - 10 = 136
(222, 248, 36) → (222 + 36) - 10 ⇒ 258 - 10 = 248
Similarly,
(212, 258, 56) → (212 + 56) - 10 ⇒ 268 - 10 = 258
Hence, "(212, 258, 56)" is the correct answer.