04-PBF 9 Abacus Leave a Comment / By Naresh / June 28, 2025 Welcome to your 04-PBF 9 Abacus 1. 3 + 9 + 1 2. 2 + 9 + 2 3. 1 + 2 + 9 4. 8 - 7 + 9 5. 4 + 5 + 9 6. 1 + 3 + 9 7. 4 + 9 + 6 8. 1 + 9 + 1 9. 2 + 7 + 9 10. 3 + 6 + 9 11. 8 + 9 + 1 12. 8 - 1 + 9 13. 5 + 4 + 9 14. 2 + 9 + 7 15. 3 + 9 + 2 1 out of 1