Solution:The pattern followed here is :{(1st number + 3rd number) × 5} = 2nd number
(7, 150, 23) → {(7 + 23) × 5} ⇒ 30 × 5 = 150
(11, 75, 4) → {(11 + 4) × 5} ⇒ 15 × 5 = 75
Similarly,
(15, 140, 13) → {(15 + 13) × 5} ⇒ 28 × 5 = 140
Hence, "(15, 140, 13)" is the correct answer.