Select the set in which the numbers are related in the same way as are the numbers of the following set.

5, 30, 40

8, 72, 88

Pattern followed is :

5, 30, 40 → 5, 5 × (5 + 1), 30 + (5 × 2)

Similarly,

1) 7, 56, 77 = 7, 7 × (7 + 1), 56 + (7 × 2) ≠ 77

2) 4, 25, 32 = 4, 4 × (4 + 1) ≠ 25, 25 + (4 × 2) ≠ 32

3) 6, 42, 49 = 6, 6 × (6 + 1), 42 + (6 × 2) ≠ 49

4) 8, 72, 88 = 8, 8 × (8 + 1), 72 + (8 × 2)

                 = 8 , 72 , 88 (satisfied)

 8, 72, 88  is correct answer .