Discuss Forum
1.
The average of nine numbers is 50. The average of the first five numbers is 54 and that of the last three numbers is 52. Then the sixth number is __
- A. 30
- B. 30
- C. 30
- D. 30
Answer: Option D
Explanation:
The 6th number is = (50 × 9) – (5 × 54 + 3 × 52) = 450 – 426 = 24. Ans: D.
Post your comments here: