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1. The average of 7 numbers is 12. After discarding one number, the average becomes 11. What is the discarded number?
- A. 7
- B. 7
- C. 7
- D. 7
Answer: Option C
Explanation:
The average of 7 numbers is 12.
total of 7 numbers is = (7x12) = 84
After discarding one number, the average of 6 numbers becomes 11
so, total of 6 numbers = (6x11) = 66
∴ the discarded number is = 84 - 66 = 18
ans: 18
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