Keyword | CPC | PCC | Volume | Score |
---|---|---|---|---|
where and when was the abacus invented | 1.43 | 0.3 | 227 | 75 |
who invented abacus | 1.78 | 0.4 | 6451 | 37 |
when was the abacus invented | 1.98 | 1 | 629 | 88 |
the abacus calculator year invented | 0.23 | 0.7 | 405 | 59 |
the abacus calculator exact year invented | 1.17 | 0.4 | 2323 | 38 |
where was abacus invented | 0.63 | 0.1 | 686 | 10 |
who invented abacus and when was it invented | 1.96 | 0.4 | 8160 | 79 |
who invented abacus computer | 0.65 | 0.7 | 5610 | 74 |
who invented abacus in china | 0.51 | 0.6 | 6641 | 14 |
who invented abacus and in what year | 0.09 | 0.4 | 3991 | 93 |
who invented abacus in india | 0.64 | 0.8 | 4609 | 24 |
abacus calculator year invented | 1.17 | 0.3 | 6594 | 57 |
abacus was invented by | 0.36 | 0.9 | 1319 | 89 |
abacus was invented by which country | 1.6 | 0.3 | 6155 | 95 |
in 3 000 b.c. the greek abacus was invented | 0.71 | 0.3 | 8405 | 28 |