Royalty-Free Mathematical Symbol Photos, dominant color: gray
- 3008x2000 Public Domain
- 4000x3078 Public Domain
- 4000x3501 Public Domain
- 3872x2592 Public Domain
- 3888x2592 Public Domain
- 2971x3041 Public Domain
- 2448x3264 Public Domain
- 3000x2000 Public Domain
- 6000x4000 Public Domain
- 2000x1333 Public Domain
- 2100x1410 Public Domain
- 1920x1200 Public Domain
- 1920x1185 Public Domain
- 4932x3288 Public Domain
- 4896x2676 Public Domain
- 1832x2664 Public Domain
- 3710x2574 Public Domain
- 2000x1500 Public Domain
- 1920x1312 Public Domain
- 1920x1279 Public Domain
- 1920x1276 Public Domain
- 2056x1536 Public Domain
- 2304x1728 Public Domain
- 4928x3264 Public Domain
- 3648x2736 Public Domain
- 3400x2500 Public Domain
- 3555x2554 Public Domain
- 3336x2220 Public Domain
- 3008x1902 Public Domain
- 5616x3744 Public Domain