| Answer | Crossword Clue |
|---|---|
| TEN | Two-digit card |
| IDNO | Nine-digit fig. on a Social Security card |
| VISA | Credit card whose first digit is a 4 |
| VEE | Two-digit sign |
| VSIGN | Two-digit display |
| BINARY | Like two-digit number systems |
| PINKYSWEAR | Use a two-digit confirmation code? |
| SIX | One of two single-digit Yankee uniform numbers that aren't retired |
| NINE | The digits in all but one of its two-digit multiples add up to it |
