Solution:The pattern followed here is :(a, b, c) → {(a ÷ 2) × (b ÷ 2)} = c
(48, 16, 192) → {(48 ÷ 2) × (16 ÷ 2)} ⇒ 24 × 8 = 192
(22, 62, 341) → {(22 ÷ 2) × (62 ÷ 2)} ⇒ 11 × 31 = 341
Similarly,
(84, 78, 1638) → {(84 ÷ 2) × (78 ÷ 2)} ⇒ 42 × 39 = 1638
Hence, "(84, 78, 1638)" is the correct answer.