| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| story of invention of zero | 1.97 | 0.6 | 307 | 70 |
| when was the invention of zero | 1.96 | 0.6 | 6595 | 49 |
| concept of zero invented | 1.63 | 0.5 | 8509 | 1 |
| who is the inventor of zero | 0.8 | 0.8 | 4764 | 67 |
| who invented the concept of zero | 1.08 | 0.3 | 3018 | 32 |
| who is invented zero | 0.25 | 0.7 | 2254 | 53 |
| who invented zero in world | 0.23 | 0.3 | 5876 | 73 |
| invention of zero | 1.71 | 0.5 | 366 | 66 |
| the invention of the zero made mathematics | 0.85 | 1 | 2688 | 84 |
| aryabhatta invention of zero | 1.45 | 0.8 | 7312 | 28 |
| why was zero invented | 1.83 | 0.7 | 1373 | 14 |
| zero was invented by which country | 1.99 | 0.1 | 8904 | 45 |
