Solution:The pattern followed here is :The gap between the first and second number and second and third number is the same
(80, 72, 64) โ (80 - 72) = 8, (72 - 64) = 8
(64, 56, 48) โ (64 - 56) = 8, (56 - 48) = 8
Similarly,
(63, 56, 49) โ (63 - 56) = 7, (56 - 49) = 7
Hence, "(63, 56, 49)" is the correct answer.