This puzzle is based off the What is a Word™, What is a Phrase™ and What is a Number™ series started by JLee.
If a number conforms to a certain rule, I call it a CB Number™. Use the following examples to find the rule:
CB Numbers™ | Non-CB Numbers™ |
---|---|
383 | 384 |
1412 | 1214 |
7557 | 8557 |
49537 | 43579 |
84286 | 86420 |
310222 | 420333 |
629218 | 639318 |
1234511 | 5432111 |
4762129 | 4763239 |
22222530 | 33333520 |
63655555 | 36355555 |
89899898 | 89898989 |
Here is a CSV:
CB Numbers™,Non-CB Numbers™
383,384
1412,1214
7557,8557
49537,43579
84286,86420
310222,420333
629218,639318
1234511,5432111
4762129,4763239
22222530,33333520
63655555,36355555
89899898,89898989
The puzzle relies on the series' inbuilt assumption, that each number can be tested for whether it is a CB Number™ own its own. In particular, a number's relationship to other numbers in the sequence is irrelevant.
These are not the only examples of CB Numbers™, more can be found.
The only reason the Non-CB Numbers™ are not in ascending order is because I have tried to make them look similar to the corresponding CB Numbers™ to their left. Note that this doesn't change the puzzle.