Solution:The pattern followed here is :(1st number Γ 3rd number) Γ 2 = 2ndΒ number
(25, 150, 3) β {(25 Γ 3) Γ 2} β 75 Γ 2 = 150
(18, 180, 5) β {(18 Γ 5) Γ 2} β 90 Γ 2 = 180
Similarly,
(52, 728, 7) β {(52 Γ 7) Γ 2} = 364 Γ 2 = 728
Hence, "(52, 728, 7)" is the correct answer.