- A56
- B54
- C50
- D58
Step-by-Step Solution
Total of 11 numbers = 550. First six = 294, last six = 312; their sum 606 counts the sixth number twice. Sixth number = 606 − 550 = 56.
Answer: A) 56
The average of 11 numbers is 50. The average of the first six numbers is 49 and that of the last six numbers is 52. The sixth number is:
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