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