Question

Type the missing number in this sequence:

9, ___, 16, 21, 27, 34, 42

Answer 1

Answer:

12

Step-by-step explanation:

9

9+3 = 12

12+4 = 16

16 + 5 = 21

21 + 6 = 27

27 + 7 = 34

and so on it goes on increasing by 1