What is the rule for this input/output table?
| In | Out |
| 15 | 16 |
| 39 | 40 |
| 87 | 88 |
+ 2
+ 1
+ 3
+ 4
ref_doc_title.
Jumping to level 1 of 1
Excellent!
Now entering the Challenge Zone—are you ready?
| In | Out |
| 15 | 16 |
| 39 | 40 |
| 87 | 88 |
Now entering the Challenge Zone—are you ready?