I can see from your images that you're working on a booklet/notebook page numbering system where pages are arranged in a specific order (Right → Left pattern). You've shown odd numbers on one page (1, 3, 5, 7, 9, 11, 13, 15, 17) and even numbers with some crossed out on another.
This is the classic booklet page imposition - when you fold sheets of paper, the page numbers don't go in simple order. Let me calculate the full arrangement for a 90-page booklet.
For a booklet, each sheet of paper has 4 page numbers. With 90 pages, you need 23 sheets (92 pages total, with pages 91-92 blank).
The rule is:
- Front Right + Front Left = Total pages + 1
- Pages go: Back-Left, Front-Right, Front-Left, Back-Right
Here is the complete arrangement for all 23 sheets (Right → Left, matching your notebook format):
90-Page Booklet - Sheet Arrangement (Right → Left)
| Sheet | Back Side (Right→Left) | Front Side (Right→Left) |
|---|
| 1 | 92 - 1 | 2 - 91 |
| 2 | 90 - 3 | 4 - 89 |
| 3 | 88 - 5 | 6 - 87 |
| 4 | 86 - 7 | 8 - 85 |
| 5 | 84 - 9 | 10 - 83 |
| 6 | 82 - 11 | 12 - 81 |
| 7 | 80 - 13 | 14 - 79 |
| 8 | 78 - 15 | 16 - 77 |
| 9 | 76 - 17 | 18 - 75 |
| 10 | 74 - 19 | 20 - 73 |
| 11 | 72 - 21 | 22 - 71 |
| 12 | 70 - 23 | 24 - 69 |
| 13 | 68 - 25 | 26 - 67 |
| 14 | 66 - 27 | 28 - 65 |
| 15 | 64 - 29 | 30 - 63 |
| 16 | 62 - 31 | 32 - 61 |
| 17 | 60 - 33 | 34 - 59 |
| 18 | 58 - 35 | 36 - 57 |
| 19 | 56 - 37 | 38 - 55 |
| 20 | 54 - 39 | 40 - 53 |
| 21 | 52 - 41 | 42 - 51 |
| 22 | 50 - 43 | 44 - 49 |
| 23 | 48 - 45 | 46 - 47 |
How to read this:
- Each cell shows Right page - Left page (matching your "Right → Left" label)
- Pages 91 and 92 will be blank (since your book has only 90 pages)
- The pattern matches exactly what you've drawn: odd numbers increase on the right, even numbers decrease on the left