The pattern followed is:- Second Number = First Number × 7 - 3 Third Number = Second Number × 3 + 7 The given set is (6, 39, 124) First Number = 6 Second Number = First Number × 7 - 3 = 6 × 7 - 3 = 42 - 3 = 39 = 39 Third Number = Second Number × 3 + 7 = 39 × 3 + 7 = 117 + 7 = 124 = 124 Checking the options: 1) (5, 38, 121) First Number = 5 Second Number = First number × 7 - 3 = 5 × 7 - 3 = 35 - 3 = 32 ≠38 Third Number = Second Number × 3 + 7 = 38 × 3 + 7 = 117 + 7 = 124 ≠121 2) (9, 34, 235) First Number = 9 Second number = First Number × 7 - 3 = 9 × 7 - 3 = 63 - 3 = 60 ≠34 Third Number = Second Number × 3 + 7 = 34 × 3 + 7 = 102 + 7 = 109 ≠235 3) (8, 53, 166) First Number = 8 Second Number = First Number × 7 - 3 = 8 × 7 - 3 = 56 - 3 = 53 = 53 Third number = Second Number × 3 + 7 = 53 × 3 + 7 = 159 + 7 = 166 = 166 4) (7, 14, 101) First Number = 7 Second number = First Number × 7 - 3 = 7 × 7 - 3 = 49 - 3 = 46 ≠14 Third Number = Second Number × 3 + 7 = 14 × 3 + 7 = 42 + 7 = 49 ≠101 Hence, the correct answer is "(8, 53, 166)".