Find the missing term in the following number series.
2, 6, 12, 20,______, 42

2, 6, 12, 20,______, 42

Logic: The differences between consecutive numbers are increasing by 2:

2 + 4 = 6

6 + 6 = 12

12 + 8 = 20

20 + 10 = 30

30 + 12 = 42

Therefore, the missing number is 30.

Thus, correct option is (d).