The average of 11 numbers is 10.9. If the average of first six is 10.5 and that of the last six is 11.4 the sixth number is_____________? September 23, 2025 by Admin A. 11.0 B. 11.3 C. 11.4 D. 11.5 ✅ The correct answer is option D. 11.5. Updated by: Ali Asghar
