Solution:The pattern followed here is :(a, b, c) → {(a + b)² ÷ 2} = c
(2, 4, 18) → {(2 + 4)² ÷ 2} ⇒ 6² ÷ 2 ⇒ 36 ÷ 2 = 18
(1, 9, 50) → {(1 + 9)² ÷ 2} ⇒ 10² ÷ 2 ⇒ 100 ÷ 2 = 50
Similarly,
(3, 5, 32) → {(3 + 5)² ÷ 2} ⇒ 8² ÷ 2 ⇒ 64 ÷ 2 = 32
Hence, "(3, 5, 32)" is the correct answer.