45
52
54
55
Answer is Right!
Answer is Wrong!
The answer is 52.
The sequence is a simple alternating addition and subtraction of 9. Starting with 13, we add 9 to get 22. Then we subtract 9 to get 13. We continue this pattern, adding 9 and then subtracting 9, to get the following sequence:
13, 22, 13, 31, 22, 13, 40, 22, 13, 49, 31, 22, 58, 40, 22, 67, 52, 13, 76
Therefore, the missing term is 52.