２０×２０
20×20
Vocabulary Coverage
Learning words in frequency order, here's how many unique words you need to know to reach various coverage percentages for this series:
| Coverage | Words Needed | % of Unique Words |
|---|---|---|
| 75% | 435 | 50.3% |
| 80% | 521 | 60.2% |
| 85% | 607 | 70.2% |
| 90% | 693 | 80.1% |
| 95% | 779 | 90.1% |
| 96% | 797 | 92.1% |
| 97% | 814 | 94.1% |
| 98% | 831 | 96.1% |
| 99% | 848 | 98.0% |
Total Unique Words: 865
Total Word Occurrences: 1,720